Miis with blue pants are miis that do not belong to you. You get these miis from the CHECK MII OUT CHANNEL which you can only get if you have WI-FI!
I'm pretty sure all Miis have navy blue pants. Unless you mark them "favorite" which makes their pants red/ The way you see Miis with blue pants is because if you go on Mii Contest Channel, and you go on posting plaza, you see other people's Miis, and because they are other people's Miis they have blue pants. (You can't edit Miis with blue pants)
to get a golden mii you have to svan a qr code or get them through streetpass
100. This counts all Miis you make and all Miis you receive or download. (i.e. QR Code Miis)
they can watch youtube miis get killed
Dye them blue with a blue dye you can buy at Wal-Mart maybe?
all miis are looking left to right and the odd miis are looking right to left in some cases they are walking left right and the odd miis are walking right left
Blue
Systems not transfer miis: DS Lite,DsiXL, and the origanal DS Systems transfer miis:3Ds and the Dsi (The Dsi may transfer miis...)
Not possible
you can have unlimited miis in your parade
No, there is no way to do so. The 3DS will support Miis, though.
red pants