Is it easier to see me as human if I don’t identify as what I am? Are they uncomfortable with me being Vietnamese/Asian?

Colorblindness is still racist.

It completely disregards the experiences of people of color, especially experiences with racism. It also ignores and denies the existence of their white privilege. And even if an individual person can ignore the color of a person’s skin, the overall culture and structure in place won’t do the same.