koobas.hobune.stream
Grid territory system
I am attempting to make a grid system with two sides controlling half each, however i want to have one side able to walk over to the other side and change grids he's walking on to his colour, however, if he boxes in some grids they would also change even tho the character has not walked on the grid(Shown in picture below). 
Question now is how can i change the red squares surrounded by blue squares to blue
