A killer line in Jaye Robin Brown's NO PLACE TO FALL

Yesterday, Kelly Jensen of Book Riot tweeted that 20 pages into a YA novel, she came across this line: 

[H]e must be part Indian. Red dot, not feather.

I asked for the title, and she pointed me to her review at goodreads, where she said:

You lost me right there, with that line. No need to read more.

I'd have that reaction, too. I've heard the phrase used before. It reduces Indians to red dots, and American Indians to feathers. Pretty gross.