This was a new feature added in murrine , it is the theme which has to customize the checkmarks/radiobuttons , there is bug #553393 about the theme problem.
As mentioned in https://bugs.launchpad.net/ubuntu/+source/human-theme/+bug/553393/comments/4 , the themes need to specify the colors.
Not a bug in murrine engine
This was a new feature added in murrine , it is the theme which has to customize the checkmarks/ radiobuttons , there is bug #553393 about the theme problem.
As mentioned in https:/ /bugs.launchpad .net/ubuntu/ +source/ human-theme/ +bug/553393/ comments/ 4 , the themes need to specify the colors.
Not a bug in murrine engine