Preview Colors (Pro Game Dev)

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I've always used the default (Texture Shaded) Preview method. I'm trying the trick Smith Micro's "Creating Better Toon Outlines" video, which uses Cartoon With Line Preview method.

Here's the problem: When I switch to Cartoon with Line, all of my color goes away. This seems like it might be a setting but I can't find it anywhere!

This happens with a brand new document with just Andy2 in it (and any other document I load).

How can I get color back into my Previews?!?