Fencer, those 13 boards are somewhat small. Any chance you could offer an enlargement in the settings? .... And, the purple and green colors are kind of gawdy. Could you set up other choices, perhaps a clear or tan background?
(hide) If you want to play a game with an opponent of a similar level, you can define a required BKR range for a new game invitation. Then nobody with a BKR outside this range will be able to see/accept it. (Katechka) (show all tips)