I had some pine milled and areas of it have turned grey and look like there
was mould on it. Is there anyway to remove the grey ? If not will it show
through if I stain the whole piece with a honey or little darker collared
transparent stain? I thought it would be a good idea to let the wood dry
inside properly stacked but have since learned that outside in the sun and
rain would have been better. I moved it all out and spray it with javex to
kill the mould but there is still some grey.