Use svelte preprocess, generate random colors, check GZipped filesize

svelte.config.js

@@ -1,11 +1,11 @@
 import adapter from '@sveltejs/adapter-static';
-import { vitePreprocess } from '@sveltejs/kit/vite';
+import preprocess from 'svelte-preprocess';
 
 /** @type {import('@sveltejs/kit').Config} */
 const config = {
 	// Consult https://kit.svelte.dev/docs/integrations#preprocessors
 	// for more information about preprocessors
-	preprocess: vitePreprocess({}),
+	preprocess: preprocess({}),
 	build: {
 		rollupOptions: {
 			output: {