And about the color thing, I never noticed it. Maybe it's only noticeable in OpenGL mode? (GL mode doesn't work in GZDoom on my computer.)
In E1M4 there are two Supercharge Breakfasts that weren't in the original game. The first is, beyond the blue door, in the small closet-like room with two Bipedici. In the original game there was a Zorchpack there instead. The other is in the large room adjacent to the maze, and I think it was probably a bowl of vegetables or something in the original. (I don't see how these discrepancies could have arisen, but nonetheless there they are.)
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