General rule of thumb is if you have to ask, the answer is no. And the beginning seems nitpick-y to me. "It's not green, it's this hexadecimal value which is green!" The later point he has is accurate. They seem to change the character to better sell to the demographic. Is that racist? No more than changing the color of hulk because people decided they don't like green-skinned characters. The problem, from what I see, is the changing of important character traits simply to sell comics. Rather than a flat out racial issue. If it was about race/ethnicity, I don't think he would've been hired in the first place. You also have to account for the "have to change something" mindset many editors/bosses have. In design work, a typical trick is to do something obviously wrong, so they can point that out without touching the rest of the work. Seems to be the case here as well."Is that racist?"