ok the sprite is brown
an I use my.flare=on;

I test unlit flag but no change the result

any say for what the sprite is yellow in shadows zone and brown in sun zone?

nobody
I wanna know if is normal of is my fault?

this is nothing... the color you use, a brown, looks dark brow against a lught color, and yellowish agaisnt darker shadow.. ths is normal for how the eye percieves color, it's an illusion.

thanks again matt