Mahogany door turned black!

[Earl Johnson 14]

I stripped a mahogany door that had tung oil with a top coat of polyurethyne with HD-80, then nutralized it. I applied a coat of gold Ready Seal on it and it looked great, until the next day. In a few places the wood turned almost black. The rest of the door looks good but the black has to go. Any ideas what caused this and what to do about it? I don't want to strip the whole door if I can help it. ( It also includes two panels). Any way to lighten these dark places? Have to go back the first of the week and do something, so I need some good advice! As always, thanks for any help. Earl

[Beth n Rod 1,279]

try this....

[Earl 14]

Maybe I'll figure out how to post the whole picture someday......

Well, sealed the door yesterday with Cabots Austrailian Timber Oil and it looks pretty good. The white around the panels in the picture is raised wood that I sanded the best I could but did not get all the white out. When it was covered with the oil it didn't show and over-all, the door is fine , the customer is fine, and I'm ..well....still not sure what went wrong and not for sure it was even Mahogany......Thanks for all the replies. Earl