As per Soulon's request, I'm going to repeat what I said in another thread about this request (located in the ICOF official forum)

..

"Yes we need a picture that truly defines the meaning of our clan name.

Don't think cold/hot
Don't necessarily assume good/evil either.

I have the feeling someone is gonna hit it right on the head soon. However, it remains to be seen whether it will be an ICOF member or an outsider."

So keep your ideas original and try to keep the clan name in mind as much as possible.