Watch the Fast Chromatic Patterns online guitar lesson by TrueFire from Play Rock Guitar 10: Advanced Soloing Approaches
Fast Chromatic Patterns - Concept 23 is a video guitar lesson presented by Shane Theriot and is sourced from Solo Mojo.
For more of the "guitar pattern" kind of chromatic sound, here is one I got from Shawn Lane. Some fast alternate picking is required in order to pull this one off. This sound can also be heard by players like Steve Morse.