Another that I'm adding to the list here and in my open ticket...

It appears the 2D panel pop-ups use a much "brighter" base texture than the default "fs9gps" pop-up, and with the panel.cfg set to :

Night=4,4,4
Luminous=128,0,0

It is impossible to see the buttons on the GPS pop-up.  I changed mine last night to brighter colors for "Night" but didn't change the luminous setting at all.  The Night setting I used is the same as the default CRJ700, and this makes all the panels look a little more red when lights are off, but they look more normal when lights are on (though still a little red, this of course because the setting I used is heavier to the red spectrum).  With lights on, now the AP and radio and such are just slightly redder, but the GPS is bright enough without changing the Luminous setting such that I can see where the buttons are and read the text on them.