There are different icons and colors in the new Gradebook. Depending on how you grade assignments (manually or otherwise), you will see different icons or colors.

 

Icons and colors are simply gradebook indicators to assist you with course grading. All assignments count toward a student's total grade unless they are excused assignments.

 

Click the link below to see what icons and colors represent in the Gradebook: 

https://community.canvaslms.com/docs/DOC-2780