diff --git a/README.md b/README.md
index c9b50a9..ea70dc6 100644
--- a/README.md
+++ b/README.md
@@ -48,7 +48,7 @@ Extend & Extend Theme token is described as the following section.
 `app/layout.tsx`
 
 ```tsx
-<DesignProvider cookies={cookies().getAll()} cookiesString={cookies().toString()} theme={AppTheme}>
+<DesignProvider initialColorMode={'dark' /* or light */ } theme={AppTheme}>
   {children}
 </DesignProvider>
 ```
@@ -63,7 +63,7 @@ All components are wrapping of Chakra-UI components.
 
 So you can use all the `styled-system` syntax used in it.
 
-Currently, css variables always have a prefix of `--ck`, but this will be changed so that it can be set in a future update.
+Currently, css variables always have a prefix of `--ck`, this can be changed by chakra-ui `css-var-prefix` config feature.
 
 For example, colors can be used in CSS like `var(--ck-colors-red-500)`.
 
diff --git a/src/provider/DesignProvider.tsx b/src/provider/DesignProvider.tsx
index 1dbe30b..8c11f72 100644
--- a/src/provider/DesignProvider.tsx
+++ b/src/provider/DesignProvider.tsx
@@ -15,7 +15,8 @@ import { InitialCookiesProvider } from './InitialCookieProvider';
 
 type Props = PropsWithChildren<{
   theme?: Dict;
-  initialColorMode?: 'dark' | 'light';
+  /** color mode of theme, default: light */
+  colorMode?: 'dark' | 'light';
   enableColorModeScript?: boolean;
 }>;
 
@@ -23,17 +24,17 @@ const cookieKey = 'chakra-ui-color-mode';
 export const DesignProvider = ({
   children,
   theme,
-  initialColorMode = 'light',
+  colorMode = 'light',
   enableColorModeScript = true,
 }: Props) => {
   return (
-    <InitialCookiesProvider cookies={[{ name: cookieKey, value: initialColorMode }]}>
+    <InitialCookiesProvider cookies={[{ name: cookieKey, value: colorMode }]}>
       {enableColorModeScript ? (
-        <ColorModeScript initialColorMode={initialColorMode} type={'cookie'} />
+        <ColorModeScript initialColorMode={colorMode} type={'cookie'} />
       ) : null}
       <StyledComponentsRegistry>
         <ChakraProvider
-          colorModeManager={cookieStorageManagerSSR(`cookieKey=${initialColorMode}`)}
+          colorModeManager={cookieStorageManagerSSR(`${cookieKey}=${colorMode}`)}
           theme={theme ?? baseTheme}
         >
           <AppAlertDialogProvider>{children}</AppAlertDialogProvider>