Hi,
What is the thickness of the shiplap? We're going to run into a problem with ours because the window jams only come out 1/2 inch past the framing and the shiplap is 3/4 inch thick.
Per the Southern Living article, the wall paint is Lambswool by Pratt & Lambert.
Yvonne McFadden LLC
smleary
Plank & Pillow
Living Vintage