This question is old, but the answer is very outdated. Smogon added form choice (I don't remember when), but you can select the Furfrou coat and Vivilion pattern (and Minior color, as well). You do so by selecting the Pokémon to be on your team and clicking the down arrow that appears on it's sprite, which will pull up a list of sprites and selecting the variant
or typing the Pokémon's Name-form (
Minior-Orange, for example) in the teambuilder. :P
Source: In this battle against a bot, I used Lareine Furfrou and an Ocean pattern Vivilion. :P
Hope I helped!