That should not be a problem in the wheel wells, unless you do allot  of
flying upside-down with the gear down, or shall I say UP!
  
  
 ..................... 
> All epoxy yellows in the sun light ,

Gentlemen,

 

From time to time I have painted excess gray fuel tank sealer onto a work table located in the back corner of my hangar.  It yellows over time without being exposed to sunlight.

 

Grayhawk

 

Hmmmmm, my gray hair turns yellow too unless I use a blue shampoo.  If I use too much of that you will be able to call me Bluehawk.