Changing Colors

I am a chameleon, not by choice.

CHANGING COLORS

I'm an expert in illusion;
I'm a master of disguise.
When I need to, I can become
someone you don't recognize.

I'm always changing temperature;
warm then cold, then I get hot.
I can freeze you out or burn you,
without giving it a thought.

My colors never stay the same;
red with passion, blush of pink;
orange with anger, blue from my tears;
it can change faster than a wink.

These changes are automatic;
a reflexive self-defense
over which I have no self-control.
Most folks think I've lost my sense.