@Kenny8195 Unless the CC you mentioned was made that way in the first place (I assume they would be careful to make the swatches/display colors match the actual color on the Sim in both CAS and live play), I would suspect the CC version in your game may not be working properly. It may have broken with a game patch/update, or with the addition of a new pack.
I would try checking with the CC creator (Simmer Akalukery) to see if it's a known issue to them and if they have a patch for it. If they have no patch/update to correct this, you may want to remove the CC until they do have a fix.