Basic Board case multi-material

Multi-material Basic Board case for the Original Prusa Enclosure to provide a pop of color and good contrast.

This was inspired by these two:

• https://www.printables.com/model/3940-mk3s-mk2s-lcd-cover
• https://www.printables.com/model/51471-dual-color-lcd-cover-for-mk3s-no-mmu-required
  • I had a friend with an MMU I could use so I wasn't as clever as @fuchsr 's design that can achieve it without MMU