Color Switching

[MisterLurch]

I am making a very simple hat in green with a large yellow "O" on it. What is the best way to switch between the green and yellow? What I am doing now is having two skeins attached and one stitch before I have to switch i catch the end of the next color in the last stitch of the color I am currently using, then I proceed with the new color and repeat as necessary. This leaves long strings stretching across the back of the cloth.