This approach isn't unheard of in sports, European soccer teams often have similar policies to separate home and visitor fans. However, it's a newer concept for NHL fans and not everyone is warming up to the idea.
It's worth mentioning that this dress code is limited to a specific club-level area, allowing visiting team supporters to wear their colors elsewhere in the venue. As the playoffs approach, the hope is that this rule doesn't dampen the spirits of hockey fans eager to support their teams on the road.