Do you use Google Classroom? Here's some good information about an update from http://www.educatorstechnology.com/ that was posted Wednesday.
"Google released today some very good new features to Google Classroom. Teachers now are able to customize the look and feel of their classes by uploading their own images to use as themes.There is also a new cropping tool that allows teachers to crop their images to the perfect dimensions and it can automatically pick a matching class colour."