I modified Yvan's RAMPS case to fit my needs. The nice thing is you can print each side flat so it is easy to print. I modified the lid for a 50mm cooling fan but included Yvan's lid for a 40mm fan. I also added a end plate that has all the holes for the RAMPS connectors. I like it best with transparent filament so you can see the blinking lights on the Arduino and Ramps Boards through the sides. Mine is not really intentionally multi colored but my Kossel build has taken so long that I printed pieces at different times with different plastics. Here is a video that shows what all the knobs and switches do, obviously you can omit the knobs and switches, it is all up to you. http://www.youtube.com/watch?v=xMHgMDECr-A&feature=youtu.be