Google Docs makes it easy to collaborate ... but it doesn't track the changes with any color coding. The editor must manually color-code to track changes while editing, whereas Suggesting mode ...

Google is making a small but profound usability tweak by adding an eyedropper tool to the color picker in Docs, Sheets ... button to enter a Hex color code or use the tool underneath.

Google’s latest Smart canvas feature for Docs is code blocks that let you more easily format and display code. Once rolled out, paste/write your code and then Insert > Building blocks ...