First open the color palette. Either double-click on a color strip of a track, or go to WINDOW - COLOR PALETTE.
Choose GROUPS from the drop down, select your Group by selecting the radio button next to the name, and choose your color.
To create a Group, select your tracks and press Control+G (WIN) or Command+G (MAC)
Press Control/Command + Shift + G to quickly turn Groups on/off.
Color your Groups to help differentiate between them and speed editing.
Default Color Settings
In SETUP - PREFERENCES - DISPLAY, you will find the Default Color settings for Tracks and Clips. By setting the default, you could, for example, have tracks, clips, and groups default to the same color. Or, default to different colors. The default settings can help you color a session just the way you want.
Be sure to make use of the DEFAULT and HOLD buttons in the color palette.
When you trash preferences you will need to reset your color options.
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