Tobacco mods and multiplayer

[ExusOne]

Hello
I would like to ask someone that use this types of mods - they restore the tobacco ads on classic cars - below is a great example:

http://www.racedepartment.com/threads/f1-2013-dlc-mod-tobacco-edit-on-all-1990-skins.86000/


Are this type of mods are legal to use in MP game? Or are they forbiden?