      @click="changeTheme('monochrome')"
                      icon="circle"
                      color="grey"
                      size="md"
                      ><q-tooltip>monochrome</q-tooltip>
                    </q-btn>
                    <q-btn
                      v-if="allowedThemes.includes('salvador')"
                      dense
                      flat
                      @click="changeTheme('salvador')"
                      icon="circle"
                      color="blue-10"
       