Ah I see, it's a complicated issue to remake how the system works, right now I would suggest just using a material you don't like.
We currently do not have a plan for a "materials and colors only" DLC but it's not off the table for the future.
OVERKILL_Tobias

Here's your DLC.

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This adds two unique mask patterns with 4 extra variations:

Material & Color Only
Mask will use the selected material and colors only. Basically a completely blank pattern.
Comes with 2 variants that disable color 1 or color 2.

Color Only
Mask will not display any material or pattern, and will only show selected colors.
Comes with 2 variants that disable color 1 or color 2.

If you're confused, just check the images tab.

This is intended for all of those "extended colors" masks, where colors 1 & 2 will change different parts of the mask. Currently, your only option is to use a small unintrusive pattern (Barbed Wire), though it's not the best solution. It also still applies the selected material to the mask.

These new patterns basically "unlock" all three mask components from each other, allowing you to use only colors, colors & materials, all three, or individual colors. This affects hundreds of existing masks as well as any recent/future releases.