Something like you can right click on the market tabs and choose a color. Because a lot of the time I have 20-30 market tabs but only 10 running trades. Then it would be nice to just right click and choose  green if its running and red if its not running

Also it would be nice if you could click and drag the market tabs so you can arrange them how you like  

Would make it more user friendly I think

edit: Maybe also automatic color change if it goes zombie (pink/purple) or if the markets spread is smaller than the selected Min % Guar. Gain (yellow)