I have an assignment for creating cost for a sign. I have done everything for the assignment, and the code even runs perfectly the way it wants it. however, it keeps giving me the error “Reason: Unable to determine color type. Type mismatch: Cannot replace Call with str” which is slicing my grade by 50%.

I have an assignment for creating cost for a sign. I have done everything for the assignment, and the code even runs perfectly the way it wants it. however, it keeps giving me the error “Reason: Unable to determine color type. Type mismatch: Cannot replace Call with str” which is slicing my grade by 50%, really annoying