GCal Background Autor: tweajh

Make sure to use hex code to add custom colours (pop-up closes)
Copy the URL of the image you want to upload (uploading files doesn't work for same reason with pop-up closing)
Can adjust opacity of the colour or image in the background (and the way the image takes up the background - ideally use Soft Light)
Feature to make events appear like they do in Apple Calendar with semi-transparency and a solid vertical bar on the left