Add gruvbox dark

build.sh

@@ -3,4 +3,6 @@
 BASEDIR="$( cd "$( dirname "$0" )" && pwd )"
 cd "${BASEDIR}"
 
-lessc -x src/edge-dark.less > dist/theme-edge-dark.css
+for theme in edge gruvbox; do
+    lessc -x "src/${theme}-dark.less" > "dist/theme-${theme}-dark.css"
+done

src/gruvbox-dark.less

@@ -0,0 +1,33 @@
+@primary:     #b8bb26; // primary color used in main texts
+@secondary:   #fe8019; // secondary color used in some texts and text based buttons
+@tertiary:    #fabd2f; // tertiary color used in other colored texts
+@fg:          #ebdbb2;
+@bg0:         #282828;
+@bg1:         #32302f;
+@bg2:         #3a3735;
+@bg3:         #45403d;
+@bg4:         #504945;
+@red:         #fb4934;
+@orange:      #fe8019;
+@yellow:      #fabd2f;
+@green:       #b8bb26;
+@cyan:        #8ec07c;
+@blue:        #83a598;
+@purple:      #d3869b;
+@grey:        #928374;
+@red-bg:      #4c3432;
+@green-bg:    #3b4439;
+@blue-bg:     #374141;
+@yellow-bg:   #4f422e;
+@button1:     #8ec07c;
+@button2:     #fe8019;
+@button-red:  #fb4934;
+@key:         @red;
+@operator:    @orange;
+@string:      @cyan;
+@value:       @purple;
+@type:        @yellow;
+@function:    @green;
+@special:     @blue;
+
+@import "base-dark";