I got my first dubia roaches ever last week, and i immediately noticed that some are different colors. Some are dark black and the others are like.... uhh im not sure how to describe it but maybe a much lighter brownish/peach color? Does that mean they are different gender from the black ones or is it nothing but diff color. Also if i want to breed these guys do i need to have anything for them in the bottom of tha enclosure? right now i just got paper towels n egg cartons, most of them hid under the paper towel as soon as i put them in there.