umm, I am slightly red green deficint and I didn't figure it out until I was 29 years old. My dad is fully red green color blind, and it just never occured to my mom (or dad) to have me checked. I think my mom was just so used to people in the family saying colors were different she just thought it was a perception thing (her dad was colorblind too). The only reason my dad ever got tested was because when he was drafted, they put him in the motor pool, and he kept running red lights. Apparently when dad was in the army (in Texas) the position of the lights was on always red on top, orange in the middle, and green on the bottom. And since he can't see red or green, he would run the lights. He got tested and viola! He's colorbind. Somethimes you don't know until really late in life.
Have you tried using a different computer? If you use a friends computer and still can't see the links you can go to your eye doctor. It's a really simple test. If you are having trouble with violet it could be a red green dificency....Of course you could also try adjusting the colors on your screen.