Led colors on submasters

Hi so I have a basic rgb led fixture and I need to be able to mix the colors using submasters for faders I want to be able to have each color on a different sub master I’ve been able to do this but the issue I have is the intensity I need it to snap to 100% for each fader so the color mixing will work otherwise when I have sun 1@50 the intenisty is also at 50 and then push up sub 2@80 intensity turns to 80 and that messes with the first subs color any soutions or other ways I can accomplish this.