Sometimes when I run BS Player, the color of start menu button and my browser's skin changes...As you can see in the picture, my browser's skin turned to mixed color(green, purple and blue).
This seems to be a problem with your graphic card when trying to perform DMA for overlay mode - it could be some graphics memory problem, for example insufficient RAS/CAS timing due to overclocking or so, or drivers problem.
Try the latest drivers and/or disable overclocking.