It’s what I call the “clown panel” these days so I guess it fits with the overall (lack of) style in Rhino. 
I mean, you could have designed the new UI to use a base color, and then text box backgrounds, scrollbar backgrounds, buttons, etc used a value shift to pop out, and then the user could tweak a single constrast slider to get everything adjust in one go instead of individually selecting colors like back in Windows 95, but what do I know…
Btw, har vi faktiskt en Svensk som jobbar på McNeel numera?