The current options for colorblindness in D2 are painfully bad. They have minimal impacts, and in many cases seem to do nothing outside the HUD. Atheon's Oracles are unreadable for me with or without the colorblind option on, and most of the other colorblind folks I've talked to agree. I'm not a programmer, so I don't know why colorblind settings in D2 are way less effective than other games I've played, but they just don't do enough.