You will also need the "triangles" in the corners.
Here's a packaged set:
http://www.****************************************************.com/product/98663113114AND98663113214.html?Category_Code=986li ghts
The removal & reinstall is very simple following the steps in the owners manual.
You can also remove the amber filter within the 'clear' housings following these instructions:
http://hverheyen.vssi-eda.com/box_pics/lights/index.html