I would like to paint our fence, which I don't think have ever been painted or treated. I would love for it to be a sage green, nothing too dark. I think it is "our" fence each side (we are the middle in a row of three identical detached properties), but I haven't seen the deeds to confirm that. Either way, I wouldn't want to annoy my neighbours either side by painting a fence that discolours from their side. I know that both sides are happy with the way the fence looks to them in their garden and don't want to change it in any way. Will it seep through, do you think, and is there a way of avoiding that happening?