My latest stationery design is a simple splash off light, summer color on crisp linen card stock. The wave design started as lines. They became waves by sheer accident when I recolored one set of lines as a fill color rather than a line color. I was happy with the minor mis-click of my mouse and decided to stick with it. I've paired a blush pink with creamy orange, sun yellow with aqua, sky blue with grass green, and lavender with green.