I just started using Evernote and have been looking at Youtube presentations about it. Almost all the videos I saw so far show Evernote in color with the tree in a medium gray background with Green Notebooks. Yellow tags and all the icons in the toolbar are in color.
My Evernote application, running Windows 7, is just a bland Black and White, unpolished looking interface. It reminds me of working on the old Palm Pilot or a black & white Kindle. I haven't used B&W applications since the 80's/90's. Even in the early days DOS would make use of the RGB 4/16 color displays.
In the Youtube videos it looks like maybe they were using a MAC? Maybe Evernote for Windows doesn't support color, seriously? In this side-by-side screenshot of Evernote the color slide is from a Youtube user and the ugly one on the right one is mine. "Where's the [beef] color?"