Sanda and Croatian taekwondo belts

As documented in "A female historian with a deep-blue belt in taekwondo," I recently dreamed about a historian whose first name I thought may have been Sandra, who held the taekwondo rank suggested by the title. Follow-up research led me twice to the word sanda. First, I tried to look up Sandra on Eldamo, but sanda was the closest I could find. Then, in the course of exploring belt ranks in various martial arts, I discovered that sanda refers to a sort of freestyle kung fu. Today, while reading Bernard Beitman's book Meaningful Coincidences, I ran across a passing reference to a "serendipity researcher" named Sanda Erdelez.

I don't think I've ever encountered the name Sanda before, so of course I looked her up. The name is Croatian. In my post-dream research, I had discovered that the Russians (and apparently only the Russians) have distinct light-blue and dark-blue belt ranks for taekwondo. I figured this was due to the fact that the Russian language treats these as two completely different colors (much like the red-pink distinction in English). I got to wondering if Croatian, being a Slavic language like Russian, might make a similar distinction both in color terms and in taekwondo ranks. I went to check the Croatian Wikipedia article on taekwondo.

The first surprise was that Croatian (Hrvatski) showed up as one of a handful of "suggested languages" for me, even though I don't think I've ever checked a single Croatian Wikipedia article in my life. The language also has a gold star next to it, which I guess means the Croats have a particularly exemplary taekwondo article.

Clicking through to the article and looking for information about belt ranks, I had an even bigger surprise:

There, in the middle of an article written entirely in Croatian, are the English words dark blue. The phrase appears once again, as dark-blu, in the paragraph below the bulleted list. No other English color words appear anywhere in the article; just that one. I had been assuming that Croatian, like Russian, probably had a native word that meant specifically "dark blue," but it looks as if, on the contrary, they have no way of expressing that color in their language and have to resort to an English loanword.

How extremely bizarre! I'm willing to bet that if I went through Wikipedia's taekwondo article in each and every language, Croatian would be the only one to include the words "dark blue" or "deep blue" -- and syncs from the dream about the deep-blue taekwondo belt led me directly to a Croatian academic named Sanda.

I have contacted Dr. Erdelez to explain these syncs and to ask if she's ever done any martial arts. I figure a "serendipity researcher" should have a high tolerance for that sort of thing.

Update (same night): I looked up Sanda Erdelez on YouTube and listened to an interview of her by Beitman. Just below it on the screen, served up by the algorithm, was a new video (posted 20 hours ago, well after my dream) with “History w/ Sandra” in the title.