I'm a black tux dude myself, but the CDS gave me a dilute calico tux last time I went to the shelter. I didn't have much choice in the matter she chose me the moment I walked in the door.
In the US, may want to wait until Halloween is over. Many shelters won't allow them for a period of time due to high return rate or risk of abuse. Btw, void kitties are some of the best kitties!