sorry, but are you sure double stonewall is used on all exterior walls? I saw your photos of Bardon art studio this morning, raced out to buy sample pot: and the colour appears to be the one used above the sliding door to side street - but definitely not the one on the rest of the w/boards. LOVE the colour used on studio w/boards, between studio and house - can you recall details? (many thanks, up to 13 sample pots without luck, thought this was finally the one...)