Houston Texans coaster. Like all my coasters it's 100mm across, with a 95mm diameter recessed middle. Total height 5mm, with a 2mm lip. Use Prusa's ColorPrint tool, or similar, to change filament at the required layers. In my example, I used:

0mm: Prusa Pearl Blue
1.2mm: 3DPrintz Red
2.2mm: Prusa White