Only bmp and jpg are supported, but EFILive implements transparency for both of them. Select the "transparent color" in the [Colors] tab page. Any pixel in your bmp or jpg of that *exact* color will allow the gauge background to show through. Sorry, no alpha transparancy yet :(Originally Posted by John Skiba
You can implement "idiot lights" using the "holes" made by the transparent color pixels by setting the background, alarm min and alarm max colors based on the alarm conditions (set in the [Alarms] tab page).
Paul