Hi guys, I have recently bought some new wooden/pewter knobs on eBay for my bass which looked much darker in the picture. I was planning to try and paint the wooden parts but then saw on the advert that they had been treated with linseed oil. Would this make it difficult to paint them? If so, what can I do about it? (other than not paint them) I was thinking of using enamel based airfix paint. Cheers guys!