I noticed that I can get a specific theme setting like so
but I don't see a way of actually setting a setting. Something along the lines of
theme_set_value('myvar','mytheme','value'); I looked at the functions available to me here https://api.drupal.org/api/drupal/core%21includes%21theme.inc/8.2.x but I didn't see anything specific to my needs.
I do see there's already a question asking the same thing here How to set theme setting but that is for Drupal 7 and I'm using 8.
Is there a quick way to set the value of a specific theme setting?