Had a little time on my hands yesterday (finished the housework, including cleaning two cars, earlier than expected).
Sanded the ash bits (don't ask - it's a measuring mishap that relegated this otherwise fine piece to "off cut") to 120 and gave it a very good treatment with a wire brush.
Whole piece, and closeup:
Applied Feast and Watson sanding sealer and then Timbermate ebony filler (couple of applications) OR Feast and Watson spirit-based black timber stain (again, a couple of applications). After it had dried (I have to say I was rather impatient) sanded it back.
Both required a similar effort for the sanding. The sealer is supposed to prevent (or reduce) any darkening/greying of the timber while retaining the emphasis of the grain. The stain seems to give better contrast but the difference is not as great in real life. Less messy to sand back.
Going towards a proper "ceruse". Three applications of the black stain, and after drying an application of sanding sealer. THEN used a cloth to wipe on a couple of different British Timber pigment-based low sheen paint. The whole section looked either totally blue, or totally red. After it dried I sanded it back.
Interesting result. Looks messy, or "worn" if you like. The paint nicely fills the grain which is great. Problem is that the black simply sanded off so if I want to use this in the future I need something that actually penetrates into the timber - any suggestions would be most welcome.
This would probably work without the black stain - natural ash with a different colour to highlight the grain.
Lastly black stain (3 apps), sanding sealer and then a mix of epoxy and glow stuff. Sanded back (not quite completely, it's a massive pain to sand).
Looks terrible, just a blob of black. A little more sanding would bring this back but of course I'd be left with the natural ash (see point above re penetrating stain).
In the dark - a little more interesting:
Love it in the pic but it's nowhere near as bright in real life - the camera makes it look much more interesting than it is.
Might go for the stain over sanding sealer for the first order, and would love to try the red and/or blue on the replacement Q body. Will keep you updated.