[Aquattro]

So I've decided that something needs to be done to bring back some lost color due to switching to LED. I've read threads elsewhere of people reporting the same thing with various brands, so it's more a technology limitation, and so far the only real fix I've found is going back to MH or T5.
But, has anyone come across any added light (UV, Violet, Red, etc) that has helped bring back lost colors? I know it's a limited number of people that have switched from a mature HM/T5 tank to LED, but what are your thoughts and experience with this?