Creating your color palette is one of the most important steps in the trace process. Here is an overview.
Creating the best palette for your image.
Use the powerful Color Optimization window to select your initial palette. Then learn how to edit that palette. Here is a zip file with many color palettes you might find useful: palettes.zip. They include warm and cool color, primary/secondary/tertiary, skin tone, and earth tone palettes. You can import and export them directly into TracedLines as seen in the video.