Preparing COLORED Sketchup models for Shapeways

It's always interesting in tutorials like these to see what other SK users' techniques are.  For instance, I would have triple-clicked the object and zoomed my camera inside to color the back-faces without reversing them, and I had never heard of ctrl-painting to insta-color an object before.  There's actually a lot of potentially useful secondary information in your process here that people might benefit from full explanations of, like group/component color versus face color, and how you can use default group color to make coloring quicker and simpler.  Also, SK users might not know that there are perfectly good reasons why one might have colored the inside of a model bright red - which I do all the time as of late to track down rogue faces - or even 100% transparent.

Anyway, your 3D printing tutorials have been timed perfectly with a big project I've been taking from Sketchup to rapid-prototyping in .STL format, and it's been fascinating to read up on your process. Cheers