Normally at your Orthadontist they would show you a colour wheel of all the colours you can get, but i would suggest darker colours because if you get lighter sometimes it can make your teeth look like they're rotting.
Yes they do. They come in ordinary colours like blue, red etc, they come in metallic colours such as silver etc and they come in clear as well.
No, you can get clear bands for your braces.
fluoro
red and blue green and blue
No unless you have a private orthadontist then yes . however you do get colours with traintracks.(usally clarity braces are metal coloured)
You can get the colored elastics changed each time the orthodontist adjusts them.
It depends on what orthodontist you go to. At the moment I have got two colors.
all kinds
yes
Your braces should blend with your tie colour or some part of the colour of your tie. As for the shirt just watch you don't have too much of a clash of colours going on. A White shirt is always a safe option and goes with any tie and braces combination. If you are wearing another colour of shirt try and blend in the colour with the braces if possible like Blue shirt would go with braces with blue stripe on them. The best rule is don't force too many different colours together try and blend them all if you can.
colours come from sun rays
You should be able to. I had general anesthesia during oral surgery while I had braces.