Brodak still does sell a few Top Flite Monokote colors.
Brodak does not have an olive drab color. I was able to find Ultracote olive drab at a local hobby shop, but it is a slightly different color compared to the ARF original. The bottom of the ARF model is Sky Blue. Brodak has a sky blue color, but not sure it matches the ARF color.
The stock ARF covering has held up so far on my P40 ARF.