editing hue and/or saturation of a CCSprite

Question

is it possible to change hue and/or saturation of a CCSprite which texture is already loaded a.png ? looking something like this eg:

[CCSprite1 spriteWithImage@"img1.png"];
[CCSprite1 setHue:150];//<<<

Answer 1

No, you can only change opacity and color (tint).

That is unless you write a custom fragment shader.