I have always read on the forum the suggestion of using Bright White bulbs. When I first setup my Viv all I could find were ones that did say "Bright White" but at a 2800k color temp, which is a yellow hue light. Question, are these the best out there to use, or are there true "bright white" bulbs around 3500-5000k color temp? Never read a direct answer to that question. If so, where? Presently using PAR20 50W Halogen 2800k.