Add Cherry Bleu theme variant

This is my modification of the dark cherry theme, caused by my
annoyance that you can set a wallpaper in the client, but it's
invisible almost all the time.

What I tried to do here is make a lot more things transparent,
so that the wallpaper would be visible more. It also looks nasty
in some situations, but this is an acceptable tradeoff for me
personally.

packages/client/src/themes/d-cherrybleu.json5

@@ -0,0 +1,25 @@
+{
+	base: 'dark',
+	props: {
+		accent: 'rgb(255, 89, 117)',
+		actualBg: 'rgb(28, 28, 37)',
+		bg: 'transparent',
+		mg: ':lighten<10<@actualBg',
+		fg: 'rgb(236, 239, 244)',
+		panel: 'rgb(35, 35, 47)',
+		renote: '@accent',
+		link: '@accent',
+		mention: '@accent',
+		hashtag: '@accent',
+		divider: 'rgb(63, 63, 80)',
+		wallpaperOverlay: ':alpha<0.5<@actualBg',
+		modalBg: ':alpha<0.5<@actualBg',
+		shadow: ':alpha<0.3<@actualBg',
+		buttonBg: '@mg',
+		windowHeader: '@mg',
+	},
+	id: '32b376df-9f1c-4ffc-8a2a-8f8c4a8792ca',
+	name: 'CherryBleu',
+	author: '@michcio@fedi2.0x7f.one',
+	desc: 'Cherry but with more transparencies',
+}