Hi,
Indeed this depends on the developer, and since the idea is to implement games as closely as possible to the original board game, it also depends on the choices made by the publisher for the game itself.
For some games relying heavily on colors we used the ColorADD system (
http://www.coloradd.net/code.asp) to make an in-game preference available. But that doesn't work for every game, and as this system is not free to use, it needs to request an authorization for each game for which it's needed.
If you find some games in which some things are especially difficult due to colors, you can report the specifics to the developer through the bug systems to request a change. But be aware that there is not always a good solution.
The browser plug-in idea mentioned by Wakan Tanka is also worth checking out.
