Is there lightmode?

[VamsiPulipati]

are there good lightmode themes

[fehmer]

yes.

[kumail-r]

"Good" is very subjective but you can take a look on your own by either pressing esc and typing theme and using the up/down arrow keys to cycle through the list of available themes, or by going into the corresponding page in settings. You can even create a custom theme or override color values if you aren't satisfied by the available presets.