Google says a thread here from about ten years ago is the definitive source of information. That thread has no information.
I assume it doesn't go well.
I made a few ornaments this year and did OK with them. Going to try to make some fancier ones for next year. Accent strip are an option, but gluing also an issue.
Of course, other woods could work, but people seem to love the Bethlehem Olivewood for Christmas ornaments.
Could you show us what thread you are talking about...?
Dying Olive wood is not impossible, however, not all pieces of Olive are suitable and those that are will need to go through some very preparation steps, one would be fan oven "roasting" for at least 3 full days.
Most of the "common" Olive wood grain and colours, regardless where it grew is too dense and oily to dye or stabilise or both, however, I would question the principle of dying "TRUE" Bethlehem Olive wood and the very reason why people love this particular Holy wood (if it has grown in Bethlehem), changing its natural colours would be changing its significance among those that like it as always, and that is natural, a matt, semi-gloss or gloss finishes can be tolerable but not dying the wood, in my view.
Olive wood does grow all around the world, including Australia, I always gave "special attention" to that type of wood, I have plenty of Olive wood and plenty of experience with it, including testing the wood with all sorts of solutions, finishes and approaches but what I have is simply Olive tree wood, the Mediterranean variety, the wood is not Holy and has nothing to do with Bethlehem or Jerusalem so, if I and anyone else decide to dye it (change its natural colours) I'm OK with it, in fact I may have done it myself, not sure, I recall stabilising it but not sure if I ever dyed any when, I dye lots of other woods I have, all the time, dying wood sometimes works other time doesn't but when "mentioning" Olive wood, particularly true Bethehem Olive wood, I could never contemplate it unless in natural colours.
So, the question needs to be asked, why would you want to dye Olive wood...?

Cheers
George