change to compat

Author: jeffwack

Project.toml

@@ -12,7 +12,7 @@ PkgTemplates = "14b8a8f1-9102-5b29-a752-f990bacb7fe1"
 Primes = "27ebfcd6-29c5-5fa9-bf4b-fb8fc14df3ae"
 
 [compat]
-Colors = "0.13"
+Colors = "0.12"
 Primes = "0.5"
 GLMakie = "0.10"
 PkgTemplates = "0.7"