I'm looking for a cleanse that incorporates the colon, liver and kidneys. Suggestions?

I usually prefer to combine remedies myself for cleanses, this way you get products that are more appropriate for you.

For the liver: Boldocynara or Milk thistle from A.Vogel. Do one bottle every spring and fall.

For the kidneys:  Stinging Nettle helps the kidneys flush out acids more efficiently but drink a lot of water with it for better results.

For the colon: Molkosan for fairly regular transit.

Half a lemon freshly squeezed in a cup of hot water every morning helps the liver eliminate toxins. 

A few ounces of fresh carrot juice also help the liver. 

Good breathing techniques that use the diaphragm help massage and oxygenate the liver.