Team color overlay
Setting custom colors on a mulitplayer game is a tedious, especially since you have to do it all over again for each turn.
Could you implement an option to set the colors for a whole team at once? Right now, if you click on a team’s name, it highlights the team’s territories. You could make a menu popup instead, similar to the one that appears when clicking a player’s name, and then add the same menu buttons “Select Visible Territories” and “Colors”.
Or:
Add a team color overlay button – click it once and all players of a team are displayed with the same color, click it again, and all colors revert back to normal.
Ideally the team colors should be customizable on a player's settings page, with defaults being something like:
Team 1 - red
Team 2 - blue
Team 3 - yellow
Team 4 - green
Team 5 - orange
Team 6 - cyan
etc.
Or:
Instead of assigning all players of a team the same colour, you could assign each player a slight variation of that color and / or a pattern:
All players of team A get a shade of red, or a different hatching of red.