Something interesting is that on Spamton's regular form, the pink-and-yellow glasses are on the opposite lens compared to FRIEND.
I assume this was an error on Spamton's part since the pink and yellow colors match the eyes when he's looking at FRIEND, but it isn't an error on Toby's part, since official merchandise also depicts Spamton with the lens in that orientation.
Which makes it interesting that the error gets corrected after he goes NEO, and even after he's defeated. Even the Spamton/Tenna cutscene, shitpost that it is, retains the correction since Spamton is facing right.
I'm not sure how much of the post-NEO Spamton depictions is intentional, but the vines sprite leads me to believe Spamton's glasses being corrected *is* intended to some capacity.