I think being a chameleon means that you are able to adapt to the various situations we have in our Christian or spiritual lives. Many times we are called upon to be in situations where we would not of our own volution be, but because we feel drawn to help those that need us.
I don't think changing to fit a group or such means selling out our Christianinty or spirituality but working within that group to better let them know about God and His plan.
Just my opinion.

Sandpiper