added tailwind back, reenabled utilities which was causing the color issue

frontend/src/components/AppSnackbar.vue

@@ -27,7 +27,7 @@ function toast(message, opts = {}) {
 }
 
 // Shorthand helpers
-const success = (msg, opts = {}) => toast(msg, { color: 'success', icon: 'mdi-check-circle-outline',  ...opts })
+const success = (msg, opts = {}) => toast(msg, { color: 'blue-grey', icon: 'mdi-check-circle-outline',  ...opts })
 const error   = (msg, opts = {}) => toast(msg, { color: 'error',   icon: 'mdi-alert-circle-outline',  ...opts })
 const warning = (msg, opts = {}) => toast(msg, { color: 'warning', icon: 'mdi-alert-outline',         ...opts })
 const info    = (msg, opts = {}) => toast(msg, { color: 'info',    icon: 'mdi-information-outline',   ...opts })

frontend/src/plugins/vuetify.ts

@@ -13,7 +13,6 @@ import { VDateInput } from 'vuetify/labs/VDateInput'
 export default createVuetify({
   theme: {
     defaultTheme: 'system',
-    utilities: false,
   },
   components: {
     VDateInput,