There's a lot of detail on the Costa Rica coat of arms, which sits in the central red stripe of the Costa Rica flag. You will need to do some very careful colouring in on this flag colouring page!
Costa Rica Flag Colouring Page
Red, white and blue are the colours of the Puerto Rico flag. Here is a colouring page to print for the kids.
The red and blue Panama flag is very striking. Make sure the kids colour in the right sections the right colour!