photo! This is a card I did for the marker club ladies, showing the "multi-color" technique (I guess...that's what I called it!)
You ink up your image with the main color you want. Then taking a cotton swab (or a blender pen if it's a tiny area) you remove the color where you're going to change it. Then, using your markers, add in the new color(s) that you want. You may need to "huff" on the stamp to re-moisten the ink if it takes you a little while.
I took this with my phone in kind of a hurry, so I apologize for the awful picture (that's why my Mom will yell at me!) The red in the bottom is not part of the card.

This set is called "Berry Christmas" and it is #116509 from the Holiday Mini Catalog. The cardstock colors are Sage Shadow, Pretty In Pink, Soft Suede and Whisper White. Ink colors are Sage Shadow, Pixie Pink, Creamy Caramel, Versamark, and Whisper White craft (for the sentiment). The bow is Kraft taffeta ribbon.