I am about to redo my hvac controls and was wondering how to do the red for warm and blue for cool? I am going with a full blue set up because I was told that white would not look good for every single switch. The hvac apparently has a weird film behind the spots but the light switches and window switches do not have that. Have some general questions that are not super common or at least I have not seen anything on them. Let me know if you can help thanks!