I'm a recent convert from Bookup/COW and think CPT is a much superior product especially for training. Its good code too. Thanks.
I find that in Photo Reading I have to slow the presentation of positions down because it takes a while to sense or see the thin green line which indicates the best move(s). I would surely be able to go at a faster speed, and reduce eye strain, if those green lines were more visually prominent. It might possibly also help if the moving piece had a green circle over it (something CPT does elsewhere).
... just my 2 cents.