Different color attributes

I got a geometry with red color on top of it, there are only 2 colors plotted on the model red and white, the issue is that when I console.log() the color attributes there are others colors too in the model, for example:

this is the model:

and these are the colors that are appearing after changing the color to dynamic:

What I am trying to do is making all the red colored vertices to extrude thanks to manthrax, but because of this rainbow issue I am getting this result:

If anyone can help regarding this I can also link the glitch editable link, Thanks again

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