Very nice and amazing Noté 5 sur 5 étoiles

I have only one request:
If I have several general styles (for every site), is it possible to add the option to choose the style randomly and not the last one from the list?
Thank you

Cette critique est pour une version précédente du module (1.3.3). 

Very interesting and creative Noté 5 sur 5 étoiles

It also motivates the user to be creative.
But I have few suggestions that might be general for all user styles and managment.
1. There are several themes that allow wallpapers, even defined by user, but there is no mechanism to assign several wallpapers with rundom usage.
2. Most of user styles are dedicated for specific site, domain etc. and this is clear - not all sites might accept all userstyles and not all userstyles can accept all sites. Therefore styles have some rules to "cautch" the appropriate site. But it also should be "try mode" - some button or right-click conext menu whith list of styles as submenu - clicking on one of these styles should apply this style to the current page regardless rules - to see if this style fits this page.

Cette critique est pour une version précédente du module (1.3.2).