They look great. One thing I will say though is Bugbite looks a tad too white to me. That might be on odd thing to say but Bugbite never struck me as truly being white so much as a very light gray. I don't own the ehobby version so I can't say for sure what color that one actually is (I can only rely on pictures) but I do have the Botcon one and that one's definately grey with paint on the head that's light enough to almost be white but it still looks grey. Nonetheless I love what you've done with these.
I have Bugbite sitting right on my shelf.....he's a slight off-white, but his head is definitely very white, since it's painted. There's even a reference to the story he's in about his head being a slightly different color than his body.
The original GoBots BugBite was just as buttery yellow as G1 Bumblebee, but I wouldn't mind a sickly-pale yellow with even a slightly greenish tinge for an evil character like this. Glyph looks fantastic, and blue is my favorite, these are very well done!