BLEND_SELECT
BLEND_SELECT(p, color.red, color.green, color.blue, *covers);
BLEND_SELECT(p, color.red, color.green, color.blue, *covers);
BLEND_SELECT(p, color.red, color.green, color.blue, *covers);
BLEND_SELECT(p, color.red, color.green, color.blue, cover);
BLEND_SELECT(p, color.red, color.green, color.blue, cover);
BLEND_SELECT(p, color.red, color.green, color.blue, cover);