Sorry, but I just can't reproduce this.  I find no detectable difference at all between the black/white and the orange/gray variants.  I tried a couple of different tests.  Details in spoiler. I have no idea what's going on here, but I simply cannot reproduce it at all.  Works fine for me. For those of you who can reproduce it... could you try a little experiment for me? Go into your KSP folder. Find the file named PartDatabase.cfg. Save a copy of it somewhere out