i actually noticed that too, when someone else posted the original version of bisharp's back sprite, though, the shoulders were intended to look light grey, since i also chose to replace the gold in the helmet. however, if thats an issue, just let me know whether you prefer the original gold helmet or just gold on the shoulders.
i didnt know which version you preferred so i just went and did the other reverse ones too
personally, i like the originals better (color-wise), though, i do find the reverse ones to be funny, since the player might just start doubting which form is which
also, i did the sprites for the rest of hydreigon's line (front and back), in case this gets accepted
still thinking of trying a few more things:
- better aura? (idk, im not very good with it, would appreciate feedback from someone whos done it b4, i.e. medicham, lucario, etc)
- emerald, amethyst, blue mouths (plus "ruby" eyes)
- blood (mouths and/or main body/wings maybe)