I was hoping you did, since it's hard to explain. I don't even know if it's an official technique. When I approach a color change where I have to add new yarn, I insert my needle, but don't wrap right away. I lay my yarn with the end pointing toward me and knit the next stitch. Then I bring the little tail that was laying over the yarn over to the back and twist it around the next main color yarn.
Then, when that is secure, I insert my needle, bring the cc color yarn up over the right needle point from the back, wrap my stitch, take off the cc color and knit the stich. This is a technique that I did read about--trapping yarn.