I saw this nice design for a cover to protect your z-axis bearings from dust and liked the idea ,but i did not want the surface to collect dust in the spaces between, so i remixed the model so it will be flat on top for easy clean, plus i added a ring under the cover to make sure it could not slide out of position.
You can turn your model 180 degrees on the plate and make the pattern another colour by selecting the painting tool with bucket choose your colour and select the pattern, by choosing the colour in your main part you change the body colour.