Example game in progress

Play and win
   
 
Players take turns placing their color by clicking an empty (white) square
 
Winner: blue
 The winner is whoever has the most squares of their color when all empty squares have been taken
General gameplay
Rule 1 of 2
MoveResult 
A changes to your color if you have at least two (2) adjacent neighbors of your color, and there is more of your color than of the other color
Same here
No change here
This effect propagates!
Rule of grays
Rule 2 of 2
MoveResult 
If you enclose one or more of the other color between two (2) of your own, in either major direction, they change to your color
This effect propagates too!
Rule of flipping
Note
The computer player needs some time to think.
Some delay in responsiveness is expected.