All Files Changing Stop-motion Keyframe Colour To easily identify stop-motion keyframes in the Timeline view, you can customize the colour In the Preferences dialog box. How to set the stop-motion keyframe colour Open the Preferences dialog box by pressing Ctrl + U (Windows/Linux) or ⌘ + U (macOS). Select the General tab. In the Colours section, click Edit Colours. In the Colours dialog box, select the Xsheet and Timeline tab. In the Timeline section, click the Stop Motion Keyframe swatch. In the Select Colour window, select a new colour and close the windows.