These mounts are often called washline mounts (or mats), French mounts, or English line and wash mounts. The examples here have both been done by framers in London. I like the deep blue wash used on the one, and the second has two wash colours combined with thin lines and the inner edge of the top mount is the original mountboard colour; giving three subtle colour shades to the mount. I think these types of mounts can look great on more traditional artwork, and even some more contemporary designs can be used to good effect on more modern work.
