Solanacae
Crowing
Individual colors in each of your coops will make them stand out. If you want them to not stand out, then keep the same color scheme for all of them. Maybe one color for the main parts and one for trim. Using the same trim color but different main colors will help to tie the different coops together so they have a cohesive look. I like the idea of using plants to dress things up, and painting flowers on the coops would be cute too!