Right now everytime blue (or human player) start first. For some reason first player got a lot advantage to others, so my suggestion would be a random player start or maybe to let player choose start order by adding option in "Select players" UI where to set
color human / cumputer / none / start turn
Cyan ☑ 3
Green ☑ 4
Purple ☑ 1
Red ☑
Yellow ☑ random
Orange ☑ random
Or something like that