Sorry to bring up an old post, but I remember reading this a while back and now that I have my copy of the game, just thought I'd put a post up with a colour blind players perspective (I am red/green colourblind)
Dice - First off, the red and green dice are a distinct enough shade that I have no issues differentiating between them. This is often a problem in some games, and Elder Sign in particular is one example of a game where the red and green dice are indistinguishable from each other for me (fortunately my friends who own the game have painted the symbols on the red die black so I can tell which is which)
Manoeuvre Dials - For me, the red and green on the dials is unfortunately too close, however the printed list of manoeuvres on the rulebook is distinct. I would recommend keeping a copy of the ship manoeuvre tables to hand just to make things clear (although I find that if I am checking the templates my opponent already knows I am doing a red or green manoeuvre, so check it frequently for white ones too just to throw them off guard!)
One area where I am struggling with the colours is actually not part of the game at all, but rather the symbols for which protective card sleeves to order, as so far as I can tell you order them based on colour from the website. Would anybody be able to do me a big favour and let me know which two card sizes this game uses?!