diff --git a/src/app/dashboard/_components/invoice-status-chart.tsx b/src/app/dashboard/_components/invoice-status-chart.tsx
index 57ba83c..15cac77 100644
--- a/src/app/dashboard/_components/invoice-status-chart.tsx
+++ b/src/app/dashboard/_components/invoice-status-chart.tsx
@@ -43,12 +43,12 @@ export function InvoiceStatusChart({ invoices }: InvoiceStatusChartProps) {
     name: item.status.charAt(0).toUpperCase() + item.status.slice(1),
   }));
 
-  // Light pastel colors for different statuses
+  // Use theme-aware colors
   const COLORS = {
-    draft: "hsl(220 9% 46%)", // muted gray
-    sent: "hsl(210 40% 70%)", // light blue
-    paid: "hsl(142 76% 85%)", // light green
-    overdue: "hsl(0 84% 85%)", // light red
+    draft: "hsl(var(--muted-foreground))",
+    sent: "oklch(var(--chart-1))",
+    paid: "oklch(var(--chart-2))",
+    overdue: "oklch(var(--chart-3))",
   };
 
   const formatCurrency = (value: number) => {
diff --git a/src/app/dashboard/_components/monthly-metrics-chart.tsx b/src/app/dashboard/_components/monthly-metrics-chart.tsx
index 63ff6be..a1587f0 100644
--- a/src/app/dashboard/_components/monthly-metrics-chart.tsx
+++ b/src/app/dashboard/_components/monthly-metrics-chart.tsx
@@ -104,13 +104,13 @@ export function MonthlyMetricsChart({ invoices }: MonthlyMetricsChartProps) {
         <div className="bg-card border-border rounded-lg border p-3 shadow-lg">
           <p className="font-medium">{label}</p>
           <div className="space-y-1 text-sm">
-            <p style={{ color: "hsl(142 45% 45%)" }}>
+            <p style={{ color: "oklch(var(--chart-2))" }}>
               Paid: {data.paidInvoices}
             </p>
-            <p style={{ color: "hsl(210 40% 50%)" }}>
+            <p style={{ color: "oklch(var(--chart-1))" }}>
               Pending: {data.pendingInvoices}
             </p>
-            <p style={{ color: "hsl(0 65% 55%)" }}>
+            <p style={{ color: "oklch(var(--chart-3))" }}>
               Overdue: {data.overdueInvoices}
             </p>
             <p className="text-muted-foreground border-t pt-1">
@@ -158,19 +158,19 @@ export function MonthlyMetricsChart({ invoices }: MonthlyMetricsChartProps) {
             <Bar
               dataKey="paidInvoices"
               stackId="a"
-              fill="hsl(142 76% 85%)"
+              fill="oklch(var(--chart-2))"
               radius={[0, 0, 0, 0]}
             />
             <Bar
               dataKey="pendingInvoices"
               stackId="a"
-              fill="hsl(210 40% 85%)"
+              fill="oklch(var(--chart-1))"
               radius={[0, 0, 0, 0]}
             />
             <Bar
               dataKey="overdueInvoices"
               stackId="a"
-              fill="hsl(0 84% 85%)"
+              fill="oklch(var(--chart-3))"
               radius={[2, 2, 0, 0]}
             />
           </BarChart>
@@ -182,21 +182,21 @@ export function MonthlyMetricsChart({ invoices }: MonthlyMetricsChartProps) {
         <div className="flex items-center space-x-2">
           <div
             className="h-3 w-3 rounded-full"
-            style={{ backgroundColor: "hsl(142 76% 85%)" }}
+            style={{ backgroundColor: "oklch(var(--chart-2))" }}
           />
           <span className="text-xs">Paid</span>
         </div>
         <div className="flex items-center space-x-2">
           <div
             className="h-3 w-3 rounded-full"
-            style={{ backgroundColor: "hsl(210 40% 85%)" }}
+            style={{ backgroundColor: "oklch(var(--chart-1))" }}
           />
           <span className="text-xs">Pending</span>
         </div>
         <div className="flex items-center space-x-2">
           <div
             className="h-3 w-3 rounded-full"
-            style={{ backgroundColor: "hsl(0 84% 85%)" }}
+            style={{ backgroundColor: "oklch(var(--chart-3))" }}
           />
           <span className="text-xs">Overdue</span>
         </div>
diff --git a/src/app/dashboard/_components/revenue-chart.tsx b/src/app/dashboard/_components/revenue-chart.tsx
index c576fb4..456cf53 100644
--- a/src/app/dashboard/_components/revenue-chart.tsx
+++ b/src/app/dashboard/_components/revenue-chart.tsx
@@ -87,7 +87,7 @@ export function RevenueChart({ invoices }: RevenueChartProps) {
       return (
         <div className="bg-card border-border rounded-lg border p-3 shadow-lg">
           <p className="font-medium">{label}</p>
-          <p style={{ color: "hsl(210 40% 50%)" }}>
+          <p style={{ color: "oklch(var(--chart-1))" }}>
             Revenue: {formatCurrency(data.revenue)}
           </p>
           <p className="text-muted-foreground text-sm">
@@ -122,12 +122,12 @@ export function RevenueChart({ invoices }: RevenueChartProps) {
             <linearGradient id="revenueGradient" x1="0" y1="0" x2="0" y2="1">
               <stop
                 offset="5%"
-                stopColor="hsl(210 40% 70%)"
+                stopColor="oklch(var(--chart-1))"
                 stopOpacity={0.4}
               />
               <stop
                 offset="95%"
-                stopColor="hsl(210 40% 70%)"
+                stopColor="oklch(var(--chart-1))"
                 stopOpacity={0.05}
               />
             </linearGradient>
@@ -148,7 +148,7 @@ export function RevenueChart({ invoices }: RevenueChartProps) {
           <Area
             type="monotone"
             dataKey="revenue"
-            stroke="hsl(210 40% 60%)"
+            stroke="oklch(var(--chart-1))"
             strokeWidth={2}
             fill="url(#revenueGradient)"
           />
diff --git a/src/app/dashboard/page.tsx b/src/app/dashboard/page.tsx
index 10e4be3..9469920 100644
--- a/src/app/dashboard/page.tsx
+++ b/src/app/dashboard/page.tsx
@@ -213,9 +213,12 @@ async function DashboardStats() {
                   </p>
                 </div>
                 <div
-                  className={`flex items-center space-x-1 text-xs ${
-                    isPositive ? "text-green-600" : "text-red-600"
-                  }`}
+                  className="flex items-center space-x-1 text-xs"
+                  style={{
+                    color: isPositive
+                      ? "oklch(var(--chart-2))"
+                      : "oklch(var(--chart-3))",
+                  }}
                 >
                   <TrendIcon className="h-3 w-3" />
                   <span>{stat.change}</span>
@@ -449,16 +452,32 @@ async function RecentActivity() {
     )
     .slice(0, 5);
 
-  const getStatusColor = (status: string) => {
+  const getStatusStyle = (status: string) => {
     switch (status) {
       case "paid":
-        return "bg-green-50 border-green-200 text-green-700";
+        return {
+          backgroundColor: "oklch(var(--chart-2) / 0.1)",
+          borderColor: "oklch(var(--chart-2) / 0.3)",
+          color: "oklch(var(--chart-2))",
+        };
       case "sent":
-        return "bg-blue-50 border-blue-200 text-blue-700";
+        return {
+          backgroundColor: "oklch(var(--chart-1) / 0.1)",
+          borderColor: "oklch(var(--chart-1) / 0.3)",
+          color: "oklch(var(--chart-1))",
+        };
       case "overdue":
-        return "bg-red-50 border-red-200 text-red-700";
+        return {
+          backgroundColor: "oklch(var(--chart-3) / 0.1)",
+          borderColor: "oklch(var(--chart-3) / 0.3)",
+          color: "oklch(var(--chart-3))",
+        };
       default:
-        return "bg-gray-50 border-gray-200 text-gray-700";
+        return {
+          backgroundColor: "hsl(var(--muted))",
+          borderColor: "hsl(var(--border))",
+          color: "hsl(var(--muted-foreground))",
+        };
     }
   };
 
@@ -513,7 +532,7 @@ async function RecentActivity() {
                     </div>
                   </div>
                   <div className="flex items-center space-x-3">
-                    <Badge className={getStatusColor(invoice.status)}>
+                    <Badge style={getStatusStyle(invoice.status)}>
                       {invoice.status}
                     </Badge>
                     <span className="font-semibold">
diff --git a/src/components/forms/invoice-form.tsx b/src/components/forms/invoice-form.tsx
index 30ff19b..ee0de32 100644
--- a/src/components/forms/invoice-form.tsx
+++ b/src/components/forms/invoice-form.tsx
@@ -214,7 +214,7 @@ export default function InvoiceForm({ invoiceId }: InvoiceFormProps) {
         ],
       }));
     }
-  }, [formData.defaultHourlyRate, formData.items]);
+  }, [formData.defaultHourlyRate]);
 
   // Update default hourly rate when client changes
   useEffect(() => {
diff --git a/src/server/db/index.ts b/src/server/db/index.ts
index 4b29113..837aa8f 100644
--- a/src/server/db/index.ts
+++ b/src/server/db/index.ts
@@ -19,7 +19,12 @@ export const pool =
     ssl: env.NODE_ENV === "production" ? { rejectUnauthorized: false } : false,
     max: 20,
     idleTimeoutMillis: 30000,
-    connectionTimeoutMillis: 2000,
+    connectionTimeoutMillis: 10000,
+    acquireTimeoutMillis: 10000,
+    createTimeoutMillis: 10000,
+    destroyTimeoutMillis: 5000,
+    reapIntervalMillis: 1000,
+    createRetryIntervalMillis: 200,
   });
 if (env.NODE_ENV !== "production") globalForDb.pool = pool;
 
diff --git a/src/styles/globals.css b/src/styles/globals.css
index def325e..faa08a7 100644
--- a/src/styles/globals.css
+++ b/src/styles/globals.css
@@ -18,14 +18,18 @@
   --accent-foreground: oklch(0.2 0 0);
   --destructive: oklch(0.58 0.24 28);
   --destructive-foreground: oklch(0.98 0 0);
+  --success: oklch(0.55 0.15 142);
+  --success-foreground: oklch(0.98 0 0);
+  --warning: oklch(0.65 0.15 38);
+  --warning-foreground: oklch(0.1 0 0);
   --border: oklch(0.9 0 0);
   --input: oklch(0.9 0 0);
   --ring: oklch(0.71 0 0);
-  --chart-1: oklch(0.55 0 0);
-  --chart-2: oklch(0.55 0 0);
-  --chart-3: oklch(0.55 0 0);
-  --chart-4: oklch(0.55 0 0);
-  --chart-5: oklch(0.55 0 0);
+  --chart-1: oklch(0.65 0.15 258);
+  --chart-2: oklch(0.7 0.14 142);
+  --chart-3: oklch(0.65 0.2 27);
+  --chart-4: oklch(0.6 0.18 302);
+  --chart-5: oklch(0.62 0.16 197);
   --sidebar: oklch(0.96 0 0);
   --sidebar-foreground: oklch(0.15 0 0);
   --sidebar-primary: oklch(0.2 0 0);
@@ -75,14 +79,18 @@
     --accent-foreground: oklch(0.98 0 0);
     --destructive: oklch(0.7 0.19 22);
     --destructive-foreground: oklch(0.22 0 0);
+    --success: oklch(0.6 0.15 142);
+    --success-foreground: oklch(0.98 0 0);
+    --warning: oklch(0.7 0.15 38);
+    --warning-foreground: oklch(0.1 0 0);
     --border: oklch(0.28 0 0);
     --input: oklch(0.35 0 0);
     --ring: oklch(0.55 0 0);
-    --chart-1: oklch(0.55 0 0);
-    --chart-2: oklch(0.55 0 0);
-    --chart-3: oklch(0.55 0 0);
-    --chart-4: oklch(0.55 0 0);
-    --chart-5: oklch(0.55 0 0);
+    --chart-1: oklch(0.7 0.15 258);
+    --chart-2: oklch(0.75 0.14 142);
+    --chart-3: oklch(0.7 0.2 27);
+    --chart-4: oklch(0.65 0.18 302);
+    --chart-5: oklch(0.67 0.16 197);
     --sidebar: oklch(0.08 0 0);
     --sidebar-foreground: oklch(0.98 0 0);
     --sidebar-primary: oklch(0.98 0 0);
@@ -131,6 +139,10 @@
   --color-accent-foreground: var(--accent-foreground);
   --color-destructive: var(--destructive);
   --color-destructive-foreground: var(--destructive-foreground);
+  --color-success: var(--success);
+  --color-success-foreground: var(--success-foreground);
+  --color-warning: var(--warning);
+  --color-warning-foreground: var(--warning-foreground);
   --color-border: var(--border);
   --color-input: var(--input);
   --color-ring: var(--ring);