아래 두 문장의 해석을 부탁드립니다.

Sports attire is big business. Each year Americans spend over $ 2 billion on caps, T-shirt, jackets, banners and the like showing the team they root for. 1)While team attire sells best in the city where the franchise resides, some teams sell better than others. In baseball, the Colorado Rockies sell more T-shirts than anyone else. Marketing experts say that people are more likely to buy a shirt that features purple, silver, and black colors. 2)In football, the number one seller is the Raiders, whose silver-and-black goods attract more fans than any other team.
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1)은 팀 복장은 ~도시에서 잘 팔린다, 몇몇 팀은 다른 팀보다 더 잘 판다. (무슨 의미인지??)
2) the number on seller 이 문장 어떻게 해석 시작해야 하는지...난감합니다. 그리고, 여기서 Raider는 무슨 의미인지??
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날씨가 흐리고, 춥내요~ 감기들 조심하세요 ^^