This requires a multi-material printer. Use PrusaSlicer's smart fill tool to fill colors into the sections of the flag on the model. Print the coaster base with TPU.
Coasters featuring the flag of Texas. Size 3.75"
You can buy a set at:
https://www.etsy.com/listing/1395962401/drink-coasters-new-mexico-state-flag-set
The author marked this model as their own original creation.