While auxiliary fog lights have traditionally been available with clear or amber lenses, the amber lens fog light is losing popularity because it has not proven to be more beneficial in foul weather than clear lens fog lights, is not as effective as a clear weather cornering light, and is often less complementary to vehicle styling.
Thanks for the info, but my application will be to use them as parking lights / turn signal, as my car will see little or no foul weather driving. Since I'm using them for the parking lights, I want to maintain the amber color.