add cybre theme, make it default

src/routes/_static/themes.js

@@ -41,6 +41,12 @@ const themes = [
     dark: false,
     color: '#4ab92f'
   },
+  {
+    name: 'cybre',
+    label: 'Cybre',
+    dark: true,
+    color: '#2c2c2c'
+  },
   {
     name: 'ozark',
     label: 'Ozark',

src/routes/_utils/themeEngine.js

@@ -4,7 +4,7 @@ let prefersDarkTheme = process.browser && window.matchMedia('(prefers-color-sche
 
 export const DEFAULT_LIGHT_THEME = 'default'
 export const DEFAULT_DARK_THEME = 'ozark'
-export const DEFAULT_THEME = prefersDarkTheme ? DEFAULT_DARK_THEME : DEFAULT_LIGHT_THEME
+export const DEFAULT_THEME = 'cybre'
 
 function getExistingThemeLink () {
   return document.head.querySelector('link[rel=stylesheet][href^="/theme-"]')

src/scss/themes/cybre.scss

@@ -0,0 +1,26 @@
+$main-theme-color: #2c2c2c;
+$body-bg-color: #181818;
+$main-bg-color: #222;
+$anchor-color: lighten($main-theme-color, 20%);
+$main-text-color: #fafaff;
+$border-color: lighten($main-bg-color, 16%);
+$secondary-text-color: #1ea21e;
+$toast-border: $main-theme-color;
+$toast-bg: lighten($body-bg-color, 4%);
+$focus-outline: darken($main-theme-color, 10%);
+$compose-background: darken($main-theme-color, 12%);
+
+@import "_base.scss";
+@import "_dark.scss";
+@import "_dark_scrollbars.scss";
+
+:root {
+  --anchor-text: #{$secondary-text-color};
+  --settings-list-item-text: #{$main-text-color};
+  --settings-list-item-text-hover: #{$main-text-color};
+
+  --action-button-fill-color-pressed: #{darken($secondary-text-color, 7%)};
+  --action-button-fill-color-pressed-hover: #{darken($secondary-text-color, 2%)};
+  --action-button-fill-color-pressed-active: #{darken($secondary-text-color, 15%)};
+  --banner-fill: #{$secondary-text-color};
+}