Allow for customizing of the dropShadows.

Allow for customizing of the dropShadows.
If xft.flags: shadow then you can specify the tint with xft.shadow.tint:
which should be a number 0 to 255. xft.shadow.offset: will specify how
many pixels to add in positioning.
Also, try to fix the inheritence in the pressed button borders. Need a
style to test this