Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
There are microtransactions if you want to use different-color shades or get drawing tutorials for various Nintendo characters and objects.
Source: https://www.digitaltrends.com/gaming/free-3ds-wii-u-eshop-games/