Lost in the ranks

IIUC, the icon color should reflect max(casual rank, MM rank).

Now, there are cases when players are unranked in MM. It seems that then their icon color doesn't update despite the fact that they may have a high casual rating.

They have full rank bar on their homepage with the message "rank up on the next victory".

Example, Kole has passed 1900 casual rank in Sep 2019 and since then fluctuates between 1900 and 2000, as for now Ladder position: 142. Top 7.8%. But his icon is Red Dwarf color. Shouldn't he be Blue White?

Stripes/stars represent level, they have nothing (directly) to do with skill level. The colors handle that.

I could be wrong but I'm under the impression that colors represent casual rank. All players with high colors also have high casual ranks as far as I can tell, or are unranked. A lot of them are unranked on MM also.

Kole seems like a possibly bugged exception. I am gold so he should be also gold or higher. And I have played very few MM games and mostly lost so my rank shouldn't be coming from my competitive side.