When I could use "scent" I always purchased candles for scent, and sometimes color, but color was secondary. The only exception was the emergency candles that always stayed in the same spot and never used until the power went out. Those, of course, are plain, white, unscented. Tea lights, always plain unscented.
If selling candles, not the carved or special shapes kind, I think most choose for scent. And what I just saw at the grocery store blew me away. Scented jar candles, 16 oz apothecary with lid, $15. In the grocery store! Not a specialty shop or any kind of extra special scents or colors. Amazing!