right click on the desktop click properties, and then click appearance and it should be an option in there to change the colors
What a clever little, (big), lad you are Craig... ;D..!
You are right, never delved that closely into it before.. ::)..!
Properties > Appearence > Item >scroll through > select colour...
Currumbo...!!!
Cheers mate...

...!
Paul. ...mine's green now...

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(Hereford).
Craig's tip of the day...!
Win 8.1 64-bit. DX11. Advent Tower. Intel i7-3770 3.9 GHz 8-core. 8 GB System RAM. AMD Radeon HD 7700 1GB RAM. DVD ROM. 2 Terra Byte SATA Hard Drive. Philips 17" LCD Monitor. Saitek Cyborg X Fly-5 Joystick. ...and a Briggs and Stratton Petrol Lawn Mower.