How to remove mesh faces based on color coding

I need to remove mesh based on color tried multiple method but not working any help will useful

Hello
I think you don’t give a lots of explanations and no data to work on.
Your mesh seems to have color on vertex not on face, so on what criteria to remove a face ? What is your metric to see if color is OK or not OK ?
Do you really need to remove the face or portion of face. Is so see mesh iso splitting.

What have you tried so far ?