refactor: Set default colorScheme to purple

Took 1 hour 12 minutes

src/pages/_app.tsx

@@ -3,6 +3,7 @@ import type { AppProps } from "next/app";
 import { ChakraProvider } from "@chakra-ui/react";
 import { SessionProvider } from "next-auth/react";
 import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
+import theme from '@/styles/theme';
 
 const queryClient = new QueryClient();
 
@@ -12,7 +13,7 @@ export default function App({
 }: AppProps) {
   return (
     <QueryClientProvider client={queryClient}>
-      <ChakraProvider>
+      <ChakraProvider theme={theme}>
         <SessionProvider session={session}>
           <Component {...pageProps} />
         </SessionProvider>