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.
So if you want a more convenient way of typing in dimly lit or dark rooms then gettng an illuminated keyboard for your Mac is definitely worth considering!
Source: https://www.devicemag.com/does-the-mac-keyboard-light-up/