more style of {NAV_TABLE_COLUMN} for another template

[patoche]

Hello,
I would like to have differents style of my menu {NAV_TABLE_COLUMN}, one with background green, one other with background red... when i change of template, but i don't know if it's possible.
I know what i could change parametrer '$template_default["nav_table_struct"]' in the file 'conf.template_default.inc.php' but how could i do to create another style of {NAV_TABLE_COLUMN} for use with another template.

Thanks