I've been messing much more with editing ratings etc than playing the game...
I just went to play Celtics vs Rockets, and noticed that the celtics jerseys were all messed up - basically it looks like the shoulders are drawn too wide now, and some of the background color is tacked on to the lateral edge of the sleeve: the upshot is the Celtics have a thick white stripe on their road jerseys and a thick green stripe on the home jerseys if they play against Houston, Phoenix, or Philadelphia.
The same applies to any other team playing against those 3 teams: I think when the game sees 'necktype=3', it applies it to BOTH teams by mistake, cause screwups in the opposing teams jerseys.
I'll try switching philly/phoenix/houston to necktype 4 or whatever the lakers have, I don't think the bug happens with those necktypes.