Dover Coloring book sublimely or openly racist?

Here’s some color peices i added to this coloring book, which i bought somewhat uncritically not long ago. I wanted to send this to a leading voice of indigenous governance but my email suddenly stopped working! (first time for that!)
Note: the copyright notice on the coloring book explicitly allows for up to 4 pages of their book to be used in independent projects.

The accompanying text tells us how to think about those who wore more finery in clothing, while most went nude into war.

