Custom CSS

Hi!!!!! I love your theme lots! It’s awesome! ?? I’m still playing around with it.

I have one question, recently I tried to update mesocolumn but it says something like -> updated, but couldn’t delete old files. I think it’s the permission set for the files.

I didn’t want the old files so I went to manually delete /wp-content/themes/mesocolumn and reinstalled mesocolumn.

Just out of curiosity, how do I completely remove this theme? I am wondering because after I removed everything (i.e. deleted /themes/mesocolumn) and re-installed, the custom css is still as per before the update. Wasn’t my deletion of the themes supposed to remove settings for custom.css?

What I want to know is, how do I completely remove mesocolumn (including settings)?

Where do I find this custom.css file?

Thank you for your time!