fix: new nav toolbar dark mode

client/themes/default/components/nav-sidebar.vue

 <template lang="pug">
   div
-    .blue.darken-3.pa-3.d-flex(v-if='navMode === `MIXED`')
-      v-btn(depressed, color='blue darken-2', style='min-width:0;', @click='goHome')
+    .pa-3.d-flex(v-if='navMode === `MIXED`', :class='$vuetify.theme.dark ? `grey darken-5` : `blue darken-3`')
+      v-btn(depressed, :color='$vuetify.theme.dark ? `grey darken-4` : `blue darken-2`', style='min-width:0;', @click='goHome')
         v-icon(size='20') mdi-home
-      v-btn.ml-3(v-if='currentMode === `custom`', depressed, color='blue darken-2', style='flex: 1 1 100%;', @click='switchMode(`browse`)')
+      v-btn.ml-3(v-if='currentMode === `custom`', depressed, :color='$vuetify.theme.dark ? `grey darken-4` : `blue darken-2`', style='flex: 1 1 100%;', @click='switchMode(`browse`)')
         v-icon(left) mdi-file-tree
         .body-2.text-none {{$t('common:sidebar.browse')}}
-      v-btn.ml-3(v-else-if='currentMode === `browse`', depressed, color='blue darken-2', style='flex: 1 1 100%;', @click='switchMode(`custom`)')
+      v-btn.ml-3(v-else-if='currentMode === `browse`', depressed, :color='$vuetify.theme.dark ? `grey darken-4` : `blue darken-2`', style='flex: 1 1 100%;', @click='switchMode(`custom`)')
         v-icon(left) mdi-navigation
         .body-2.text-none {{$t('common:sidebar.mainMenu')}}
     v-divider