I have always wondered....does the red remain on the high red hypo brooks king until adulthood?
Most of the "Flames" (hypo and normals) out there will not hold their red/orange into adulthood.
All red Floridana fade as they mature some less that others. The deeper/darker red the animal is as a hatchling the more color it will retain as an adult/a nice red head is something to look for also.
any line out there today that the red does in fact go through the brooks until adulthood
Yes:
I've got a Hypo line and non-hypo line that holds red/orange nicely.
Adult female Hypo (being bred by a "Jelly".)

Adult Male (non-hypo) Flame: This is a new line, but it's very promising... breeding these to unrelated lines still results in hi-red hatchlings!

I've seen some at shows that are winners also (Just look for deep/dark red/oranges and red heads for the best of the best)
~ZF