1. I would personally suggest Reds for gaming and either blues or browns for typing, I'm currently typing/gaming on Blacks and I hate it, when I have some spare money, I'm going to switch back to either blues or reds.
2. I don't believe there is, nope.
3. Personally I like the 75% keyboards, such as the Noppoo Choc mini, the Keycool 84, etc etc. But I think this is all down to personal preference.