Home Do It Yourself buy unfinished frames, stain them to look like weathered barn wood. take a mayo jar or mason jar, fill with vinegar and add steel wool…let it sit for a few days and the vinegar will dissolve the steel wool and create a stain you can brush on with a foam or bristle brush….apply one coat at a time untill you get the level of grey you want, let dry between coats. works well on unfinished wood