The config key colors is optional, and we assume a default mempty if the key is not present. However, if the key is present but contains invalid data (such as misspelled color names), aeson still uses the default instead of printing an error message.
The config key
colorsis optional, and we assume a defaultmemptyif the key is not present. However, if the key is present but contains invalid data (such as misspelled color names),aesonstill uses the default instead of printing an error message.