Add new colors to gamesetup

[Stan]

Currently the only colors available are loaded from player_defaults.jsonDue to this, you can really add new ones, because for instance the game doesn't support 9 players.

We could either split this file to extract the colors, or modify the parser to allow more players to be parsed.

We could use something like this to generate different colors

​http://gamedev.stackexchange.com/questions/46463/how-can-i-find-an-optimum-set-of-colors-for-10-players