$Light1 color: 0.7 0.7 0.7
$Light1 pos: 0.0 0.0-2.0
$Light2 color: 0.5 0.0 0.0
$Light2 pos: -2.0 0.0 0.0
$Light3 color: 0.3 0.3 0.3
$Light3 pos: 2.0 0.0 0.0
// required
$BG trans: 0.50
// required
// upper left
$BG color1: 0.4 0.4 0.4
// required
// upper right
$BG color2: 0.4 0.4 0.4
// required
// lower left
$BG color3: 0.4 0.4 0.4
// required
// lower right
$BG color4: 0.4 0.4 0.4
-------------------------------------------------------