Improve theme

src/client/app/desktop/views/components/ui.header.clock.vue

@@ -89,7 +89,7 @@ export default Vue.extend({
 			display table-cell
 			vertical-align middle
 			height 48px
-			color #9eaba8
+			color var(--desktopHeaderFg)
 
 			> .yyyymmdd
 				opacity 0.7

src/client/theme/dark.json5

@@ -98,7 +98,7 @@
 
 		calendarWeek: '#43d5dc',
 		calendarSaturdayOrSunday: '#ff6679',
-		calendarDay: '#c5ced6',
+		calendarDay: '$text',
 
 		materBg: 'rgba(0, 0, 0, 0.3)',
 

src/client/theme/light.json5

@@ -98,7 +98,7 @@
 
 		calendarWeek: '#19a2a9',
 		calendarSaturdayOrSunday: '#ef95a0',
-		calendarDay: '#777',
+		calendarDay: '$text',
 
 		materBg: 'rgba(0, 0, 0, 0.1)',