Changing template style on menu item click - Joomla! Forum - community, help and support

hi guys, want know how change template style when click on menu item. know can assign different templates different pages, don't want that, saw on demo sites on template monster , themeforest option when click on menu item ( example named red ) template style changes red variation, not changed page,but pages, if go page after style changed red, , on, until click on other menu item says example blue, style pages enter after blue...i have few color styles different css, , can change in templates advanced options, want able change way...thanks

you're gonna have write javascript done, , not "gracefully degrade" if visitor has scripting disabled.

you can, of course, test , display warning if like.