So I just got the Nova Launcher Prime and I can't seem to find a way to change the folder color, it stays black. On my home screen I have a bunch of folders containing a apps. When looking at the home screen I can see the app thumbnails but the background is black. I realize I can change the background color once the folder is open but is there a way to change it when looking at all of the folders on the home screen? Is it based on the wallpaper I'm using? As advanced as Nova Launcher Prime is I'm surprised this isn't an easy thing to find. Here is a screen shot.