In Ancient Egypt, red was a very unlucky colour.

I hove always preferred Luigi more than Mario. It might just because he's the one taking backseat all of the time, but everywhere, New Super Mario Bros. DS, Mario Kart DS, Mario Kart Wii, Mario Party DS, Super Mario 64, Super Mario 63, and all of thoseother games with him in it - I always automatically choose him. I got so addicted to him at one point that I set my DS name to him

I' have more sense now that I'm older, but reminiscing is always good... I hope.

Actually, in all of the games I've played, Luigi usually has better stats...
Super Mario 64: Luigi turns invisible, can kick his legs to flutter down, and can backflip
Mario Kart DS and Wii: Luigi is a very light charcter making for good drifting. His karts and bikes are good as well. On the DS, the Poltergust is one of the three cars recommended for PRB.
Anyway, those are just some ways. This is just my opinion. Luigi FTW!
-SMIC.