add an new entry point

apps/app/src/styles/colors/colors.scss

@@ -0,0 +1,3 @@
+@use '@growi/core/scss/bootstrap/init' as *;
+
+@import 'bootstrap/scss/root';

apps/app/vite.styles-prebuilt.config.ts

@@ -7,7 +7,7 @@ export default defineConfig({
     outDir: 'src/styles/prebuilt',
     rollupOptions: {
       input: [
-        '/src/styles/theme/apply-colors.scss',
+        '/src/styles/colors/colors.scss',
         '/src/styles/vendor.scss',
       ],
       output: {