Nothing ever makes people happy. The old GUI was nasty (and it wasn't from the original D* branded receivers, it went even farther back to the RCA brand receivers). This nasty GUI was one of the things that Dish trolls were quick to point out while bashing D*. Now it's fixed, and is in almost all ways superior to the Dish GUI, and people still just NEED to bitch about it. If you can't see that it looks better, you're definitely doing something wrong.
ClemSole, you just don't know what you're talking about. Yes, they absolutely could've come up with a color combination that gives better contrast and visibility than white-on-black. Know what it is? Green on purple. That's about as high as the contrast gets. It's also f'n ugly as all getout. White illuminated text on a black background is very easy to read from a distance regardless of ambient light, and works well in a GUI. A lot of people watch TV in a darkened room. Bright colors (like a bright blue background) in the GUI works against you by not only fatiguing your eyes, but it also 'shocks' your eyes when it comes up. It floods the room with light, and since you're staring right at it, your eyes are forced to adjust, then they have to re-adjust after it goes away (giving you the floating yellow box). No different than turning on the bathroom light at 4am and having to aim through squinted eyes, then tripping over the dog on the way back to bed because you can't see.
