There was an old support thread that seemed to reference menu options that do not exist in the current version. Basically the problem is easily seeing which polar is which, it's as if the graphing functionality were never quite finished, limiting its usefulness. Here I've analyzed at 3 different low Re's, and initially all the graphs were a thin dark grey line on black. I was able to change them ALL to yellow, but it does not appear there is a way to generate each polar in a different color in batch...