Thanks all. Les - there was a little discolouration over night whilst I was working on it, but once it was finished I think drying it out in the microwave helped to minimise it happening at all. The finished pot has no finish, and has only been sanded inside a little, and the outside is as it came off the gouge, so I would expect it to darken in colour a little. However, the other thin walled pots I've made with the same tree all seem to have kept their colour, so maybe thin walls and forced drying is a method for reducing any reddening?!