Help! I just keep playing with my son on RHP. We would like to alternate black & white, but have not been able to do that.

Go on your son's profile (or vice versa) and select 'Challenge' located on the left.

Before you select 'start new game', you have the options to select what colour you play as (by default it will say random colour)

You cannot alternate once the game's already begun... if you like, you could just delete the new game and create a new one.

Hope this helps.

Thanks loads, 64sop! We appreciate your response.