Let's talk about our Red Rush strategy...

Then everyone will play with the red color. Who will you force to play with blue?:) And if everyone wants to play with red, it means it's overpowered.

Let them want to. They'll quickly realize that rushing the blue player is not that easy... then their eyes will open :)

And in general, you can ask Baratortch to make a function to transfer money on the 1st day. Then you can bargain for the color, and the issue of color balance will resolve itself.