You can choose your color separately from your team’s color.
☆ NintendObs Weekly – Monday, May 19, 2014 – Sunday, May 25, 2014.
Pic of the day. In previous games in the series, if you chose the red team in a team battle, your Mario would have been red. But now you can choose any color you want! The color outlining the characters will show their team affiliation.
— Sakurai (NNID: SakuraiMasahiroA)
Source: Miiverse.
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