I have the Omnigrid 8.5" x 24" and the 12.5" square. They have the black solid main lines, white 1/4" lines and yellow highlighting on all the main black lines. I quilt in my dining room, so the rulers currently sit on the window sill, with the 12.5" square one sitting upright. I noticed recently that the yellow colour is all fading from that one from sitting in the sun. Actually makes it a bit less distracting.