Thanks. You can read more about my motivation in /about/ section.
Yes that maybe true about too bright colors, this is on todo list - i will be adding overlay effects, depending on the background so that screen look more natural in the current environment.
In the first one there seems to be something a bit strange going on with parallel lines (or is it my eyes?). This [0] looks kind of inset into the screen because the edges of the buttons are still parallel.
Your screen looks good to me. However first background is actually slightly rotated and top and bottom lines are not 100% horizontal, so that maybe the reason why see it a bit inset.
Something is slightly off about the mockups [1]. I'm not 100% sure what it is. Maybe the colors look too vibrant to be on an actual screen?
1. http://i.imgur.com/FbqPNMR.png