I don't know if different types of craws have different colors during molting, but up here in ohio biger craws turn bright blue when they molt and still have very soft shells. I had some I caught and kept in a fish tank and it was amazing to see. When they molt their claws were electric blue, so I use saphire blue trailers a lot. Just my .02

Caleb

I use a variety of colors depending on time of year and forage, but my go to color is white.

Thinking out of the box is important. In the spring when the Redwing Blackbird chicks hatch, I will sometimes throw a Grey jig with a white pork against the bank to simulate a chick that has fallen out of the nest. This has been very successful in some lakes that are just mobbed with these birds. Just watch out, they like to divebomb.

Dave

This is actually much closer to what I've seen naturally occurring in the waters I fish. Perhaps its the pollution in the Great lakes, LOL.

http://images.google.com/imgres?imgurl=http://www.petfish.net/articles/pix/1crayfish_lynn.jpg&imgrefurl=http://www.petfish.net/articles/Invertebrates/blue_crayfish.php&h=312&w=325&sz=25&hl=en&start=7&um=1&usg=___TZPKcYItRWzbLBgpZw7eIg78wc=&tbnid=l1nAOrHKXbq6EM:&tbnh=113&tbnw=118&prev=/images%3Fq%3Dblue%2Bcrayfish%26um%3D1%26hl%3Den%26sa%3DG

Manns Stone Jig, has a color that would fit that perfectly, its like a lightbrown/white/blue. You should check that out.

As far as my favorite jig colors/trailers go, I like black/blue or black for heavy stained/muddy water clarities, or on overcast days. (If the water is really clear, and its a overcast day, I will use these colors still)

Greenpumpkin, Watermelon, Watermelon red, or any shades of green/brown in clear or lightly stained water clarity.

As for trailers, Netbait Paca Chunks, and Ragetail Chunks are my favorite, although the downside to them is the claws tend to come off after a fish or two.. but the action is incredible. I will match the trailer color to the color of the jig.

I keep it simple.

Blk/blue jig w/ blk/blue fleck trailer for stained water

brown jig w/ Green Pumpkin trailer for clearer water

Rattle Head Black Jig w/

Green Pumpkin pepper & blue flake craw.

this combo rocks in my area..

Jeff

I'll start off with my trailer matching the jig. If that doesn't work I will start changing the trailer to try and get more contrast between the skirt and the trailer.