In iReal Pro for Mac OS-X is there a way to choose a green background color?

I'm running Version 5.0.1 (6216) of iReal Pro for Mac OS-X on my Macbook using Snow Leopard. There does not appear to be a way to set the background color of a chart to the pale green that I use on my iPhone when running iReal Pro for iOS7 on my iPone 4S. Using Preferences, I can choose several shades of background white (that all look pretty much the same to me), or several shades of background black (that also look pretty much the same), and a pair of beige backgrounds, but there's no color wheel to select essentially any background color like there is in iReal Pro for iOS7.

Am I missing something, or is that a feature that's in the works? Or . . . ?

what you see in Prefs is what is available currently.

Okay, thanks, dflat.