Can iOS 7 folders and dock be skinned to be totally black?

I've just upgraded to iOS 7 on an iPhone 4S. I prefer a completely black wallpaper, but I noticed that making it so will turn the backgrounds of folders and the dock grey.

I am looking for a combined wallpaper color and folder/dock background to make them as close as possible to all black. If someone has a jailbreak solution, that's great, but that won't work for me as I prefer not to change the OS in that way.

Are there solutions to achieve this visual effect?

Solution 1:

As far as I know, there is really no way to do what you are asking. Both the dock and the folder backgrounds are a result of the "frosted glass" effect that Apple has introduced with iOS 7. No matter what color background you are using, the dock and folder backgrounds are going to lighten and blur whatever is behind them to achieve that effect.

Solution 2:

Settings > General > Accessibility > Increase Contrast: ON goes some way to reduce the transparency effects, particularly in Control Center, but the grey boxes you refer to are essentially an average of your background wallpaper. Switch to a largley blue one, and they will use a colour averaged blue with added transparency for them. There's no supported way to set an arbitrary colour.