Perhaps it would help if you posted your tank set up. Usually the environment they are in has an impact on what color they are if he was bright and is now dull perhaps something is wrong? What lights do you use and what brand are they. What are the temps in your tank? You could def post some pics of your beardie and the tank!!
Rose is in a 75 gallon tank with MVB. I recently purchased it like two months ago. It's about 13 inches away from Rose on one side. The temp is at 90 degree. I fed her evey day with fresh vegetables and fruits. Crickets about every other day and once a week dusted. I'm going to try to figure out how to get the picture to show up on this post. Rose is four years old.
Thanks for your help.
Michelle (will try to see if I can post a picture tonight)
I think as beardies get older, they lose a bit of their coloring. If you live in a warm climate you could take the beardie outside for some actual sunlight. It brightened up one of my beardies!