That really isn't much extra color at all. If you really get good and dark with products but use nothing on the face, you look ridiculous. I always liked to get as dark as I could in the sun and/or tanning bed, then do a coat of Protan every night for a week. Most of it showers off but each coat stains the skin a little more. No shower after the Friday night coat, and then another coat Saturday AM. I'd have a jar of Dream Tan on hand, and if the stage lighting was suitable I'd add a coat of that before walking out there..
It's been 6 years since my last show. I don't know what Jan Tana is putting out there now, but way back in the day the old Jan Tana liquid lotion was the God Awfulest mess I ever tried to use. The whole inside of my home and car looked like camouflage after the show. Most of us used it, though, and we looked as much like coal miners than bodybuilders, especially on the face.