I got the golden owl for the new French tree!
I finally recovered my golden owl for the new French tree today, but with the new crown system, the tree does not look nearly as pretty as it did before. I would suggest to Duolingo to abandon the topic based colours of the lessons, and to use instead a gradation of gold circles with different levels of shading, from light to dark, to indicate the crown level. That way, the user could quickly scan the tree to see which topic would require the most work.
That was my other idea, except no need to change number of skill levels, with all the work they've put into them, I doubt they would change that. But either add 1 or 2 new colours to match the ranks, or this could be a feature of the 3rd to 5th levels. At the very least, the 5th level should turn gold. Here, have a lingot :)