Blend

you know how you can make colors less transparent?

so you make the two colors you want to blend really transparent

and say if your blending orange and red you would make a line of the transparent red at the verry top then go over it with another line of red gettting closer to the middle until you get to the middle then you do the same with the orange exept make it go from the verry bottom to top you put a color in between the two colors on another layer beneth it and BOOM blending

ill make an anim on it

here XD