Customizable css theme (for stylus/stylish)

/* ==UserStyle==
@name Example
@namespace NS
@version 1.0.0
@description TODO
@author You
@preprocessor stylus

@var color sBarColor "background-color" #dbd3d3
@var color sBarButton "background-color" #ff0000
==/UserStyle== */

@-moz-document domain("example.com") {
    body {
        background: sBarColor !important;
    }
}