I love my optometrist because she doesn’t mind if I ask questions unrelated to my own condition. I’m not colour blind, but one of my characters is. I asked for clarification on colour blindness, specifically on not seeing the colour red. Wikipedia, I pointed out (probably unnecessarily), was only as accurate as the contributors and they could be iffy. She laughed at that.
Turns out, Wikipedia was right. How’s that an accomplishment for someone?