How To Change The Color In Mbmenu

Hello there,
I have downloaded the MBmenu from here http://www.yiiframework.com/extension/mbmenu/ which is working perfectly.
All I wanted to change the color of the background and foreground on selection. I have tried to tweak with mbmenu.css but could not succeeds. All I need to remove the black background color and make it simple white box with all menu appear in black and on selection the selected item change the foreground color to white and background color to blue or red. Could you help me with that.


Thanks a lot
Ashish Tyagi