Recover the shitty shelf with alcantara of a shade WOT matches your interior.
Job jobbed
That is a damn fine tip DG
It is pricey, but I am considering it as a possible solution as the attempt to spray paint the donor shelf is not working.
After unbolting the blind from my acquired shelf, and thoroughly considering all options including trying to respray the whole unit, I have now opted to go with Doctor Gollum's great suggestion. Alcantara it is going to be, all in for £40 I will be able to recover the shelf and give it an upmarket appearance that my Omega deserves.
The other options, like cutting my existing shelf was not an option when all considered. The blind is held on by 5 nuts on studs that are specially fitted. There is no way I could possibly transfer those to my existing shelf without making a hell of a mess. The great truth is that by going with the fabric cover option it will all be easier to do. Just a case of transferring the speaker housings and centre rear seat belt casing over.
Now I have been able to study the donor shelf all is clear on what to do. Once the material comes through I will be able to complete the project