I would like to make a shape effect color (example for Wash).
I go on shape generator > color > (for example here) I select Red etc....
I record it.
My problem :
I want a blue color base for wash, so I put them Blue (for exemple).
And I want to do a red effect shape.
When I start my shape, the effect is Purple (Mix of Red Shape effect and Blue Palette color).
Is it possible to make a red shape and keep always the red color, no mixing color purple (no matter the basic color from the palette) ??

And If I wante to change the blue color by an other from the palette

Thks....