I realize this is from 2004 but since it was bumped - there is a book by DND about the role of Blacks in the Canadian Forces through history, including a black Canadian who as awarded the Victoria Cross. I have it on my shelf at home, I'll have to dig out the title if anyone is interested. It may be available on line - I think the book was distributed freely among units the way some of the journals are.
I've seen a similar DND book (not a pam, but a real book) on women as well. Probably one on Natives also.
There are some privately published books on races in the CF - The Dragon and the Maple Leaf (?) focuses on Chinese soldiers in the Canadian Army in WW II. Seems to be a growing interest in this field of study. Like Art, I'm not comfortable singling out any group or ethnicity, and in the US, a whole pile of Medals of Honor were awarded decades after WW II to Nisei and Negros, which somehow seems wrong. Not that they didn't deserve their awards, but so many white soldiers also got passed over too (Dick Winters, for example) it just seems like reverse discrimination.