I don’t see anything about Jason in the story.
Colchis was said by Herodotus to have been settled by Egyptians because of their common practice of circumcision:
The “Sea People” events in Egypt were not that long ago:
Hey, maybe a related story:
Early Bronze Age battle site found on German river bank
The article refers to voyage of the “Argonauts” which would be Jason, in the Black Sea in search of the golden fleece.
Sources I have read also mention the African related curly hair of the people of that region.
Regarding the Sea People, a number of sources I have encountered refer to that period about 3,300 years ago. The most recent I have seen is from Atlas of Ancient Egypt by John Baines and Jaromir Malck (1982), a beautiful book I might add. Page 99, “Some of the reliefs at Medinet Habu are not only artistically but also historically important, because they record historical events of the reign of Ramesses III [page 36, 1194-1163 BC]:...The exterior of the temple: Campaigns against the Libyans, Asiatics and the ‘sea peoples’ are shown on the north wall.”
Thanks for the Bronze Ate link.
I decided to Google “Medinet Habu sea people” and found a lot of material there. This link was profusely illustrated and was the 3rd or 4th down on the list. It looks as though the sea people in some of the maritime battle scenes are wearing a sort of horned helmet. Wonder if some of the sea people settled in Scandinavia and became Vikings in later centuries.