Color changing with publishing?

Articulate support wasn't ever able to help me, but we DID partner with someone comfortable with javascript and coding who found a fix. I can't share the actual solution because I don't have the tech knowledge, but basically... Different browsers have their own ways of choosing colors, so different browsers were coming up with slightly different shades of the same color. The fix was to create a separate, slightly different colored version of each image for each different browser and layer the different versions on top of each other and make them all "Hidden". Then we added javascript triggers into the SL file so that the published package identified which browser is being used automatically, and pulls up the proper image (while keeping the other copies hidden). It requires extra time and programming, but it worked for us. 

Maybe your case will be simpler and it's always worth a shot, but that's what we ended up doing.