I'm not sure if my comments will add anything to the debate but here goes anyway.
To start with it's definitely not unattractive - but without seeing the finished form before the pyro and colouring I can only guess what it was like.
Here's my guess, standard oak grain, which is attractive but might or might not of worked well or even detracted from the burr.
However if that's what was there, by adding the extra work and covering it you've forced the eye to focus on the important area, the burr. In so doing made the Burr and the irregular shape that bounds it appear as a unusually shaped clock face. One you notice and (to my eye) try to see what the shape within it is, map, face, animal etc. Without the clock it might not have worked except as an unusual platter.
The fact that you've used a colour complimentary to the wood helps, Blue, green etc. would really have not worked at all - I would definitely have thought it was a map!
Does it work Yes(ish!), Is it attractive, again yes(ish) but more so to some than others from reading the forum. Was it an experiment and did you learn from it - only you can answer.
Overall, the speed with which it sells and how happy the purchaser is will be with it is the deciding factor.
And finally to throw my tuppence worth into the ring - yes, I like it.
