Color-coding your opponents
 

I just started playing on Ongame and I realized that they have (as well as some other sites) color codes alongside with player notes. Can you provide me with good examples how you color code other players or if you have any links to coding examples I would appreciate it. One bad thing about color coding for me is that my I have trouble differentiating shades of colours and therefore using all the colors isn’t really even good for me