Changing the color on a C-4 today may seem like no big deal.
Certainly it's your car, and you may do as you please and desire.
I will simply say that C-2's with a color change lose about 25% of their value in driver quality condition, and 50% or more if show quality.
C-3's with similar changes are a bit lower, but not by much.
C-4's are still so low in their value cycle, that today it is no big deal, but that will change as the car ages.
While selling your car is likely one of the farthest thoughts on your mind, just know that you will be making it difficult to sell at anywhere near the price of an original car.
The first question I am asked on most any car is always is it numbers matching, with the second being does it match the paint and trim codes.
While I am sure it may not matter to some, it matters to those who search for higher end examples.
Good luck with you decision!
Marty