Can anybody help me with this problem.
first, I open a window, it show like this:

but when I maximize the window, the problem occurrs:


after I click on the taskbar, it become like this:


the background colour is different from before.
And not just that, the problem happened everywhere

I think it's a serious bug, no wonder it's a beta. I kind of regret paying for it.
My info
Your computer has a Windows Experience Index base score of 4.7Your Windows Graphics Experience score is 4.7
WindowBlinds version : WindowBlinds 7.19 (build 290 - Windows 7 Edition) - 64 bit OS
WindowBlinds is installed correctly on this PC WindowBlinds appears to be activated on this PC(Generic PnP Monitor) 1 is attached to Intel(R) Graphics Media Accelerator HD
Wblind.dll 2010/09/23 15:59:20Wblind64.dll 2010/09/23 15:59:51Wbsrv.dll 2010/08/09 14:03:56SevenConfig.exe 2010/09/23 15:59:27Wbload.exe 2010/09/07 17:02:35Wbhelp.dll 2010/09/07 17:02:34Tray.dll 2009/10/23 20:12:19Wbload.dll 2010/04/27 11:10:25Screen.exe 2010/05/26 11:18:43
I'm using diamond skin.