No it doesn't. The Cleanest Race is a good book, but try to take it with a grain of salt. The Juche is the same in or out of the country. The propaganda focus is what is different, not the ideology.
The relevant North Korean sub-ideology dealing with race is 우리민족제일주의 (not sure how they translate that, probably Our-Race-First-ism works well enough). According to the book I have (bought in Pyongyang two years ago, it states:
"Our-Race-First-ism has no connection with racialism or racial exclusionism. Our-Race-First-ism emphasizes the need to have pride and confidence in one's race and to become the master of one's destiny. Our-Race-First-ism does not state that the biological construction of Koreans is different from others."
Then it goes on about "bourgeois racial thought" and its terribleness for awhile. And then,
"There are no separate superior or inferior races. Every race carries creative wisdom and ability."
Then some shit about imperialism for a bit. Then, the important bit:
"Juche Sasang is a human-centred ideology that views people as the masters of all things and the most precious being on earth, and resolutely supports the independence of the masses. Therefore, Juche fundamentally repudiates racial hatred, exclusionism and imperialism."
That's a hasty translation but you get the gist. Sure, in practice there is a fair bit of racism in North Korea, promoted in odd ways by the government. But the ideology is _explicitly_ anti-racist, and the DPRK spent a lot of time and money promoting it around the world. When I went to Juche tower it was covered in placards from Juche study groups all over the world, with many from Africa.
Juche at the end of the day is nothing much more than national Stalinism with an emphasis on the leader and self-sufficiency. There is a lot of random fluff about "the physical life given by one's parents and the socio-political life given by the leader" but its not that important. Romania under Ceausescu modelled itself to a degree on the DPRK, as they were in similar political circumstances.
So replicate that in an African country and it should work. You need a Communist country with a strong leader, politically isolated.