diff --git a/web/app/(commonLayout)/app/(appDetailLayout)/[appId]/overview/chartView.tsx b/web/app/(commonLayout)/app/(appDetailLayout)/[appId]/overview/chartView.tsx
index bb1e4fd95b..00f1190045 100644
--- a/web/app/(commonLayout)/app/(appDetailLayout)/[appId]/overview/chartView.tsx
+++ b/web/app/(commonLayout)/app/(appDetailLayout)/[appId]/overview/chartView.tsx
@@ -46,7 +46,7 @@ export default function ChartView({ appId }: IChartViewProps) {
 
   return (
     <div>
-      <div className='flex flex-row items-center mt-8 mb-4 text-gray-900 text-base'>
+      <div className='flex flex-row items-center mt-8 mb-4 system-xl-semibold text-text-primary'>
         <span className='mr-3'>{t('appOverview.analysis.title')}</span>
         <SimpleSelect
           items={Object.entries(TIME_PERIOD_MAPPING).map(([k, v]) => ({ value: k, name: t(`appLog.filter.period.${v.name}`) }))}
diff --git a/web/app/(commonLayout)/app/(appDetailLayout)/[appId]/overview/page.tsx b/web/app/(commonLayout)/app/(appDetailLayout)/[appId]/overview/page.tsx
index 137c2c36ee..47dd36eb81 100644
--- a/web/app/(commonLayout)/app/(appDetailLayout)/[appId]/overview/page.tsx
+++ b/web/app/(commonLayout)/app/(appDetailLayout)/[appId]/overview/page.tsx
@@ -12,7 +12,7 @@ const Overview = async ({
   params: { appId },
 }: IDevelopProps) => {
   return (
-    <div className="h-full px-4 sm:px-16 py-6 overflow-scroll">
+    <div className="h-full px-4 sm:px-12 py-6 overflow-scroll bg-chatbot-bg">
       <ApikeyInfoPanel />
       <TracingPanel />
       <CardView appId={appId} />
diff --git a/web/app/components/app-sidebar/basic.tsx b/web/app/components/app-sidebar/basic.tsx
index 51fc10721e..20777c7b6a 100644
--- a/web/app/components/app-sidebar/basic.tsx
+++ b/web/app/components/app-sidebar/basic.tsx
@@ -60,18 +60,18 @@ export default function AppBasic({ icon, icon_background, name, isExternal, type
   return (
     <div className="flex items-start p-1">
       {icon && icon_background && iconType === 'app' && (
-        <div className='flex-shrink-0 mr-3'>
+        <div className='shrink-0 mr-3'>
           <AppIcon icon={icon} background={icon_background} />
         </div>
       )}
       {iconType !== 'app'
-        && <div className='flex-shrink-0 mr-3'>
+        && <div className='shrink-0 mr-3'>
           {ICON_MAP[iconType]}
         </div>
 
       }
       {mode === 'expand' && <div className="group">
-        <div className={`flex flex-row items-center text-sm font-semibold text-gray-700 group-hover:text-gray-900 break-all ${textStyle?.main ?? ''}`}>
+        <div className={`flex flex-row items-center text-sm font-semibold text-text-secondary group-hover:text-text-primary break-all ${textStyle?.main ?? ''}`}>
           {name}
           {hoverTip
             && <Tooltip
@@ -86,7 +86,7 @@ export default function AppBasic({ icon, icon_background, name, isExternal, type
             />
           }
         </div>
-        <div className={`text-xs font-normal text-gray-500 group-hover:text-gray-700 break-all ${textStyle?.extra ?? ''}`}>{type}</div>
+        <div className={`text-xs font-normal text-text-tertiary group-hover:text-text-secondary break-all ${textStyle?.extra ?? ''}`}>{type}</div>
         <div className='text-text-tertiary system-2xs-medium-uppercase'>{isExternal ? t('dataset.externalTag') : ''}</div>
       </div>}
     </div>
diff --git a/web/app/components/app/overview/appChart.tsx b/web/app/components/app/overview/appChart.tsx
index d1426caa27..6ae6253812 100644
--- a/web/app/components/app/overview/appChart.tsx
+++ b/web/app/components/app/overview/appChart.tsx
@@ -231,7 +231,7 @@ const Chart: React.FC<IChartProps> = ({
   const sumData = isAvg ? (sum(yData) / yData.length) : sum(yData)
 
   return (
-    <div className={`flex flex-col w-full px-6 py-4 border-[0.5px] rounded-lg border-gray-200 shadow-xs ${className ?? ''}`}>
+    <div className={`flex flex-col w-full px-6 py-4 rounded-xl bg-components-chart-bg shadow-xs ${className ?? ''}`}>
       <div className='mb-3'>
         <Basic name={title} type={timePeriod} hoverTip={explanation} />
       </div>
@@ -242,11 +242,11 @@ const Chart: React.FC<IChartProps> = ({
           type={!CHART_TYPE_CONFIG[chartType].showTokens
             ? ''
             : <span>{t('appOverview.analysis.tokenUsage.consumed')} Tokens<span className='text-sm'>
-              <span className='ml-1 text-gray-500'>(</span>
+              <span className='ml-1 text-text-tertiary'>(</span>
               <span className='text-orange-400'>~{sum(statistics.map(item => Number.parseFloat(get(item, 'total_price', '0')))).toLocaleString('en-US', { style: 'currency', currency: 'USD', minimumFractionDigits: 4 })}</span>
-              <span className='text-gray-500'>)</span>
+              <span className='text-text-tertiary'>)</span>
             </span></span>}
-          textStyle={{ main: `!text-3xl !font-normal ${sumData === 0 ? '!text-gray-300' : ''}` }} />
+          textStyle={{ main: `!text-3xl !font-normal ${sumData === 0 ? '!text-text-quaternary' : ''}` }} />
       </div>
       <ReactECharts option={options} style={{ height: 160 }} />
     </div>
diff --git a/web/app/components/base/select/index.tsx b/web/app/components/base/select/index.tsx
index 687d402582..3332a11abd 100644
--- a/web/app/components/base/select/index.tsx
+++ b/web/app/components/base/select/index.tsx
@@ -245,7 +245,7 @@ const SimpleSelect: FC<ISelectProps> = ({
             leaveTo="opacity-0"
           >
 
-            <Listbox.Options className={classNames('absolute z-10 mt-1 px-1 max-h-60 w-full overflow-auto rounded-md bg-components-panel-bg-blur py-1 text-base shadow-lg border-components-panel-border border-[0.5px] focus:outline-none sm:text-sm', optionWrapClassName)}>
+            <Listbox.Options className={classNames('absolute z-10 mt-1 px-1 max-h-60 w-full overflow-auto rounded-md bg-components-panel-bg-blur backdrop-blur-sm py-1 text-base shadow-lg border-components-panel-border border-[0.5px] focus:outline-none sm:text-sm', optionWrapClassName)}>
               {items.map((item: Item) => (
                 <Listbox.Option
                   key={item.value}
diff --git a/web/context/app-context.tsx b/web/context/app-context.tsx
index 7addfb83d4..25a313a76b 100644
--- a/web/context/app-context.tsx
+++ b/web/context/app-context.tsx
@@ -127,7 +127,7 @@ export const AppContextProvider: FC<AppContextProviderProps> = ({ children }) =>
       setCurrentWorkspace(currentWorkspaceResponse)
   }, [currentWorkspaceResponse])
 
-  const [theme, setTheme] = useState<Theme>(Theme.light)
+  const [theme, setTheme] = useState<Theme>(Theme.dark)
   const handleSetTheme = useCallback((theme: Theme) => {
     setTheme(theme)
     globalThis.document.documentElement.setAttribute('data-theme', theme)