It also depends on time of year when you catch them. Brookies seem to display much brighter colors during spawning then the other trout in this area.
I will say the Clinch brookies are pathetic looking, and thin like eels. I guess you can't turn down free fish, but it just seems like a waste when there is plenty of room to manage the rainbows and browns.
The prettiest brookies I have caught in the Mtns were in two places, Alum Cave Creek, and over in Cherokee National Forest. I caught some years ago in Alum Cave Creek in October that would absolutely knock your socks off with their colors.