generally, a more liberal attitude is taken by those in the business of selling tartan, stressing that anyone may wear any tartan they like. the claimed "rules" are mere conventions, with different levels of importance depending on the symbolic meaning of the tartan on some particular occasion. for example, when a district tartan is worn at a football game, or a family tartan at a family event, such as the investiture of a new clan chief, the issue of wearing the event's tartan is of greater concern than wearing the same tartan when attending highland games where no event is scheduled where the tartan would have special significance. the same rules apply as do to wearing "any clothing" that prominently displays colors with national or political significance, such as un-patterned orange or green cloth in ireland (regardless of whether it is worn as a kilt), or red, white, and blue colors at national events in france or the united states.