of course... in Gauges.js there are two variables "boolt" and "boolf", this are the two base64 encoded images for boolean true and boolean false... you can replace those with your own images of any colour...
<font color="red">Please note that my reply IS NOT from GpsGate!!!</font id="red">
------------------------------------------
<font size="1">Email: tech@scorpiontrack.ro Skype: gabrielkalman
Internet: It doesn't make you more stupid, it just makes your stupidity more accessible to others</font id="size1">