Rocket Ron wrote:
Also I have pine boards on the ceiling of my open to the outside porch and
some of them are stained by water at the corners so they look a greyish
colour. Is there anything I can do to get the colour back to match the rest?

Probably not. Check that it's not a problem with the varnish
peeling off. You might be able to streak it with some coloured
varnish to disguise the stain.