Opera 12.17: How to make item in right click menu bold type?

[laingman]

laingman last edited by

I have edited the right click (document menu) to display internal window list (list of open tabs). The list is displayed numbered in order from left to right with the active tab in bold type.
So I have been trying to make the most used items (print, bookmark and close) in the right click menu bold type with no success so far. Any ideas as to the correct command and where to place it? Thanks.