diff --git a/frontend/src/pages/budgets/BudgetsPage.tsx b/frontend/src/pages/budgets/BudgetsPage.tsx
index d4bb354..0b51142 100644
--- a/frontend/src/pages/budgets/BudgetsPage.tsx
+++ b/frontend/src/pages/budgets/BudgetsPage.tsx
@@ -8,6 +8,7 @@ import { IconDeviceFloppy, IconUpload, IconDownload, IconInfoCircle } from '@tab
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
 import api from '../../services/api';
 import { useIsReadOnly } from '../../stores/authStore';
+import { usePreferencesStore } from '../../stores/preferencesStore';
 
 interface BudgetLine {
   account_id: string;
@@ -98,6 +99,11 @@ export function BudgetsPage() {
   const queryClient = useQueryClient();
   const fileInputRef = useRef<HTMLInputElement>(null);
   const isReadOnly = useIsReadOnly();
+  const isDark = usePreferencesStore((s) => s.colorScheme) === 'dark';
+  const stickyBg = isDark ? 'var(--mantine-color-dark-7)' : 'white';
+  const stickyBorder = isDark ? 'var(--mantine-color-dark-4)' : '#e9ecef';
+  const incomeSectionBg = isDark ? 'var(--mantine-color-green-9)' : '#e6f9e6';
+  const expenseSectionBg = isDark ? 'var(--mantine-color-red-9)' : '#fde8e8';
 
   const { isLoading } = useQuery<BudgetLine[]>({
     queryKey: ['budgets', year],
@@ -317,8 +323,8 @@ export function BudgetsPage() {
         <Table striped highlightOnHover style={{ minWidth: 1600 }}>
           <Table.Thead>
             <Table.Tr>
-              <Table.Th style={{ position: 'sticky', left: 0, background: 'white', zIndex: 2, minWidth: 120 }}>Acct #</Table.Th>
-              <Table.Th style={{ position: 'sticky', left: 120, background: 'white', zIndex: 2, minWidth: 220 }}>Account Name</Table.Th>
+              <Table.Th style={{ position: 'sticky', left: 0, background: stickyBg, zIndex: 2, minWidth: 120 }}>Acct #</Table.Th>
+              <Table.Th style={{ position: 'sticky', left: 120, background: stickyBg, zIndex: 2, minWidth: 220 }}>Account Name</Table.Th>
               {monthLabels.map((m) => (
                 <Table.Th key={m} ta="right" style={{ minWidth: 90 }}>{m}</Table.Th>
               ))}
@@ -337,7 +343,7 @@ export function BudgetsPage() {
               const lines = budgetData.filter((b) => b.account_type === type);
               if (lines.length === 0) return null;
 
-              const sectionBg = type === 'income' ? '#e6f9e6' : '#fde8e8';
+              const sectionBg = type === 'income' ? incomeSectionBg : expenseSectionBg;
               const sectionTotal = lines.reduce((sum, line) => sum + (line.annual_total || 0), 0);
 
               return [
@@ -368,9 +374,9 @@ export function BudgetsPage() {
                         style={{
                           position: 'sticky',
                           left: 0,
-                          background: 'white',
+                          background: stickyBg,
                           zIndex: 1,
-                          borderRight: '1px solid #e9ecef',
+                          borderRight: `1px solid ${stickyBorder}`,
                         }}
                       >
                         <Text size="sm" c="dimmed" ff="monospace">{line.account_number}</Text>
@@ -379,9 +385,9 @@ export function BudgetsPage() {
                         style={{
                           position: 'sticky',
                           left: 120,
-                          background: 'white',
+                          background: stickyBg,
                           zIndex: 1,
-                          borderRight: '1px solid #e9ecef',
+                          borderRight: `1px solid ${stickyBorder}`,
                         }}
                       >
                         <Group gap={6} wrap="nowrap">
diff --git a/frontend/src/pages/cash-flow/CashFlowForecastPage.tsx b/frontend/src/pages/cash-flow/CashFlowForecastPage.tsx
index fa70ebf..0f2be49 100644
--- a/frontend/src/pages/cash-flow/CashFlowForecastPage.tsx
+++ b/frontend/src/pages/cash-flow/CashFlowForecastPage.tsx
@@ -8,6 +8,7 @@ import {
   IconArrowLeft, IconArrowRight, IconCalendar,
 } from '@tabler/icons-react';
 import { useQuery } from '@tanstack/react-query';
+import { usePreferencesStore } from '../../stores/preferencesStore';
 import {
   AreaChart, Area, XAxis, YAxis, CartesianGrid,
   Tooltip as RechartsTooltip, ResponsiveContainer, Legend,
@@ -79,6 +80,7 @@ export function CashFlowForecastPage() {
   const now = new Date();
   const currentYear = now.getFullYear();
   const currentMonth = now.getMonth() + 1;
+  const isDark = usePreferencesStore((s) => s.colorScheme) === 'dark';
 
   // Filter: All, Operating, Reserve
   const [fundFilter, setFundFilter] = useState<string>('all');
@@ -418,10 +420,10 @@ export function CashFlowForecastPage() {
                   <tr
                     key={d.month}
                     style={{
-                      borderBottom: '1px solid var(--mantine-color-gray-2)',
+                      borderBottom: `1px solid ${isDark ? 'var(--mantine-color-dark-4)' : 'var(--mantine-color-gray-2)'}`,
                       backgroundColor: d.is_forecast
-                        ? 'var(--mantine-color-orange-0)'
-                        : i % 2 === 0 ? 'transparent' : 'var(--mantine-color-gray-0)',
+                        ? (isDark ? 'var(--mantine-color-orange-9)' : 'var(--mantine-color-orange-0)')
+                        : i % 2 === 0 ? 'transparent' : (isDark ? 'var(--mantine-color-dark-5)' : 'var(--mantine-color-gray-0)'),
                     }}
                   >
                     <td style={{ padding: '6px 12px', fontWeight: 500 }}>{d.month}</td>
diff --git a/frontend/src/pages/monthly-actuals/MonthlyActualsPage.tsx b/frontend/src/pages/monthly-actuals/MonthlyActualsPage.tsx
index e01b319..f9e0e28 100644
--- a/frontend/src/pages/monthly-actuals/MonthlyActualsPage.tsx
+++ b/frontend/src/pages/monthly-actuals/MonthlyActualsPage.tsx
@@ -10,6 +10,7 @@ import {
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
 import api from '../../services/api';
 import { useIsReadOnly } from '../../stores/authStore';
+import { usePreferencesStore } from '../../stores/preferencesStore';
 import { AttachmentPanel } from '../../components/attachments/AttachmentPanel';
 
 interface ActualLine {
@@ -66,6 +67,11 @@ export function MonthlyActualsPage() {
   const [savedJEId, setSavedJEId] = useState<string | null>(null);
   const queryClient = useQueryClient();
   const isReadOnly = useIsReadOnly();
+  const isDark = usePreferencesStore((s) => s.colorScheme) === 'dark';
+  const stickyBg = isDark ? 'var(--mantine-color-dark-7)' : 'white';
+  const stickyBorder = isDark ? 'var(--mantine-color-dark-4)' : '#e9ecef';
+  const incomeBg = isDark ? 'var(--mantine-color-green-9)' : '#e6f9e6';
+  const expenseBg = isDark ? 'var(--mantine-color-red-9)' : '#fde8e8';
 
   const yearOptions = Array.from({ length: 5 }, (_, i) => {
     const y = new Date().getFullYear() - 2 + i;
@@ -178,16 +184,16 @@ export function MonthlyActualsPage() {
           <Table.Tr key={line.account_id}>
             <Table.Td
               style={{
-                position: 'sticky', left: 0, background: 'white', zIndex: 1,
-                borderRight: '1px solid #e9ecef',
+                position: 'sticky', left: 0, background: stickyBg, zIndex: 1,
+                borderRight: `1px solid ${stickyBorder}`,
               }}
             >
               <Text size="sm" c="dimmed" ff="monospace">{line.account_number}</Text>
             </Table.Td>
             <Table.Td
               style={{
-                position: 'sticky', left: 120, background: 'white', zIndex: 1,
-                borderRight: '1px solid #e9ecef',
+                position: 'sticky', left: 120, background: stickyBg, zIndex: 1,
+                borderRight: `1px solid ${stickyBorder}`,
               }}
             >
               <Group gap={6} wrap="nowrap">
@@ -292,10 +298,10 @@ export function MonthlyActualsPage() {
         <Table striped highlightOnHover style={{ minWidth: 700 }}>
           <Table.Thead>
             <Table.Tr>
-              <Table.Th style={{ position: 'sticky', left: 0, background: 'white', zIndex: 2, minWidth: 120 }}>
+              <Table.Th style={{ position: 'sticky', left: 0, background: stickyBg, zIndex: 2, minWidth: 120 }}>
                 Acct #
               </Table.Th>
-              <Table.Th style={{ position: 'sticky', left: 120, background: 'white', zIndex: 2, minWidth: 220 }}>
+              <Table.Th style={{ position: 'sticky', left: 120, background: stickyBg, zIndex: 2, minWidth: 220 }}>
                 Account Name
               </Table.Th>
               <Table.Th ta="right" style={{ minWidth: 110 }}>Budget</Table.Th>
@@ -304,8 +310,8 @@ export function MonthlyActualsPage() {
             </Table.Tr>
           </Table.Thead>
           <Table.Tbody>
-            {renderSection('Income', incomeLines, '#e6f9e6', totals.incomeBudget, totals.incomeActual)}
-            {renderSection('Expenses', expenseLines, '#fde8e8', totals.expenseBudget, totals.expenseActual)}
+            {renderSection('Income', incomeLines, incomeBg, totals.incomeBudget, totals.incomeActual)}
+            {renderSection('Expenses', expenseLines, expenseBg, totals.expenseBudget, totals.expenseActual)}
           </Table.Tbody>
         </Table>
       </div>
diff --git a/frontend/src/pages/reports/BudgetVsActualPage.tsx b/frontend/src/pages/reports/BudgetVsActualPage.tsx
index 6e36a6d..d2dc7c9 100644
--- a/frontend/src/pages/reports/BudgetVsActualPage.tsx
+++ b/frontend/src/pages/reports/BudgetVsActualPage.tsx
@@ -5,6 +5,7 @@ import {
 } from '@mantine/core';
 import { useQuery } from '@tanstack/react-query';
 import api from '../../services/api';
+import { usePreferencesStore } from '../../stores/preferencesStore';
 
 interface BudgetVsActualLine {
   account_id: string;
@@ -46,6 +47,9 @@ const monthFilterOptions = [
 export function BudgetVsActualPage() {
   const [year, setYear] = useState(new Date().getFullYear().toString());
   const [month, setMonth] = useState('');
+  const isDark = usePreferencesStore((s) => s.colorScheme) === 'dark';
+  const incomeBg = isDark ? 'var(--mantine-color-green-9)' : '#e6f9e6';
+  const expenseBg = isDark ? 'var(--mantine-color-red-9)' : '#fde8e8';
 
   const yearOptions = Array.from({ length: 5 }, (_, i) => {
     const y = new Date().getFullYear() - 2 + i;
@@ -92,7 +96,7 @@ export function BudgetVsActualPage() {
 
   const renderSection = (title: string, sectionLines: BudgetVsActualLine[], isExpense: boolean, totalBudget: number, totalActual: number) => (
     <>
-      <Table.Tr style={{ background: isExpense ? '#fde8e8' : '#e6f9e6' }}>
+      <Table.Tr style={{ background: isExpense ? expenseBg : incomeBg }}>
         <Table.Td colSpan={6} fw={700}>{title}</Table.Td>
       </Table.Tr>
       {sectionLines.map((line) => {
diff --git a/frontend/src/pages/reports/QuarterlyReportPage.tsx b/frontend/src/pages/reports/QuarterlyReportPage.tsx
index 92d4af3..39db971 100644
--- a/frontend/src/pages/reports/QuarterlyReportPage.tsx
+++ b/frontend/src/pages/reports/QuarterlyReportPage.tsx
@@ -8,6 +8,7 @@ import {
   IconTrendingUp, IconTrendingDown, IconAlertTriangle, IconChartBar,
 } from '@tabler/icons-react';
 import api from '../../services/api';
+import { usePreferencesStore } from '../../stores/preferencesStore';
 
 interface BudgetVsActualItem {
   account_id: string;
@@ -48,6 +49,9 @@ export function QuarterlyReportPage() {
   const currentQuarter = Math.ceil((now.getMonth() + 1) / 3);
   const defaultQuarter = currentQuarter;
   const defaultYear = now.getFullYear();
+  const isDark = usePreferencesStore((s) => s.colorScheme) === 'dark';
+  const incomeBg = isDark ? 'var(--mantine-color-green-9)' : '#e6f9e6';
+  const expenseBg = isDark ? 'var(--mantine-color-red-9)' : '#fde8e8';
 
   const [year, setYear] = useState(String(defaultYear));
   const [quarter, setQuarter] = useState(String(defaultQuarter));
@@ -207,7 +211,7 @@ export function QuarterlyReportPage() {
               </Table.Thead>
               <Table.Tbody>
                 {incomeItems.length > 0 && (
-                  <Table.Tr style={{ background: '#e6f9e6' }}>
+                  <Table.Tr style={{ background: incomeBg }}>
                     <Table.Td colSpan={8} fw={700}>Income</Table.Td>
                   </Table.Tr>
                 )}
@@ -215,7 +219,7 @@ export function QuarterlyReportPage() {
                   <BVARow key={item.account_id} item={item} isExpense={false} />
                 ))}
                 {incomeItems.length > 0 && (
-                  <Table.Tr style={{ background: '#e6f9e6' }}>
+                  <Table.Tr style={{ background: incomeBg }}>
                     <Table.Td colSpan={2} fw={700}>Total Income</Table.Td>
                     <Table.Td ta="right" fw={700} ff="monospace">{fmt(incomeItems.reduce((s, i) => s + i.quarter_budget, 0))}</Table.Td>
                     <Table.Td ta="right" fw={700} ff="monospace">{fmt(incomeItems.reduce((s, i) => s + i.quarter_actual, 0))}</Table.Td>
@@ -226,7 +230,7 @@ export function QuarterlyReportPage() {
                   </Table.Tr>
                 )}
                 {expenseItems.length > 0 && (
-                  <Table.Tr style={{ background: '#fde8e8' }}>
+                  <Table.Tr style={{ background: expenseBg }}>
                     <Table.Td colSpan={8} fw={700}>Expenses</Table.Td>
                   </Table.Tr>
                 )}
@@ -234,7 +238,7 @@ export function QuarterlyReportPage() {
                   <BVARow key={item.account_id} item={item} isExpense={true} />
                 ))}
                 {expenseItems.length > 0 && (
-                  <Table.Tr style={{ background: '#fde8e8' }}>
+                  <Table.Tr style={{ background: expenseBg }}>
                     <Table.Td colSpan={2} fw={700}>Total Expenses</Table.Td>
                     <Table.Td ta="right" fw={700} ff="monospace">{fmt(expenseItems.reduce((s, i) => s + i.quarter_budget, 0))}</Table.Td>
                     <Table.Td ta="right" fw={700} ff="monospace">{fmt(expenseItems.reduce((s, i) => s + i.quarter_actual, 0))}</Table.Td>