Quick fix for the overly dark silver textures:
Open the five external texture files in DXTbmp (F-80_1_t, F-80_2_t, F-80_3_t, F-80_4_t and Tanks_type1_L [Tanks_type2_L]) and copy the primary texture ("norm") and save it to the desktop (leaving the original with the alpha channel open in DXTbmp.)
Open the copy in your favorite photo processing program and under the Fix or Enhance (or whatever your proggy calls it) menu click underexposed (or your program's equivalent.) Save the result, and copy it back to the texture file that you have open in DXTbmp (i.e., overwrite "norm" with the modified image.) Save in DXTbmp and you're done.
The result will be significantly lighter and more "silvery." If you only go one notch of "underexposed" you won't wash out the markings enough that you'd notice.
I found it worth the effort to copy and save just the orange parts from the TV-1 paint and paste them back into the modified texture; that orange is kind of washed out already and it didn't need to be made lighter.
You might also notice that on certain paints the tip tanks don't pick up their textures on the model with bombs. It's a mapping glitch and easily fixed.
Copy the texture Tanks_type1_L (or Tanks_type2_L, whichever one is already in that paint's texture folder) and name it FTanks_type2_L (or Tanks_type2_L, whichever it needs to be. Keep both tank textures in the paint's texture folder; the model with bombs needs one of them and the other two models need the other one.