Sessie, I assume that it is your colon cancer that is in your liver and not a new cancer. Also I assume that the cancer was located with a CT or PET scan. If this is correct you should know that a CT scan only sees differences in tissue density and a PETscan only sees metabolic activity so neither can definitively diagnose cancer. So it may pay to ask if it can be biopsied to be sure before you start treatment.
Treatment could be surgery, chemo or radiation or some combination depending on the size and location. You need to talk to your Drs and find out what the options are and what the pros and cons are for each option. You should consider talking to the specialists that do each treatment to get the info first hand.
You also know that this can be beat and is not a death scentance. Good luck and let us know how it goes.