a lot of folks probably wouldn't like this option bc its annoying to do, but i have a similar issue as you. i often have a bunch of blues and greens and it can be annoying trying to sort through it all.
anyway, what i do is put in the notes column a * or two or sometimes 5 (if there are more notes, i put that first) - kind of like, hey these are the ones i really like (where *** is a top target but * is a lesser one). its annoying you cant sort on it, and its annoying to put the notes in, but it does kinda help visually. i like to keep guys who are like 'watch carefully but probably nothing will come of it' on blue, and there can sometimes be a lot - so having like 6 of the 25 or so blues with ** at the front helps me pick them out.