After 2 days of reflexions, i'm back!!you're right, i've mistaked!!! i've mixed up gradient color and light dark color... sorry...Is for that i didn't understand your last msg where you're talking about 2 colors in request... Of course, a gradient is build from one to antoher, so what i wanted to do was not possible in the way i supposed to do it... my gradient in fact worked well, just it's not what i wanted to do.So, i need to get a color from request and create a "gradient" with modification of the light of this color. And in that way, my first one will be black and my last white (or invers