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{menu template="cssmenu.tpl" number_of_levels='4'}
I would suggest that you import the cssmenu.tpl template (see attached image). You must supply a name then (e.g. 'colored_menu').
Then change your code:
Code: Select all
{menu template="colored_menu" number_of_levels='4'}

Applied changed should be visible immediately after a refresh of the front-end webpage.
If you can't get it working with the colors, post your colored_menu template here. We must get this to work!