Consider these factors:
* Your school's dress code: Check your school's handbook to ensure red jeans are allowed.
* Your personal style: Do you feel comfortable and confident in red jeans? If so, go for it!
* Your comfort level: Will you feel self-conscious or uncomfortable wearing them? If so, you might want to choose something else.
* The overall outfit: Red jeans can be a statement piece. Make sure the rest of your outfit complements them and doesn't clash.
Ultimately, the best outfit for your first day of middle school is one that makes *you* feel good and confident. If red jeans do that for you, then wear them!