I'm looking to start powder coating my jigs and want to get some stuff from Columbia coatings, they have tons of stuff but its hard to tell the true colors from the pictures and don't want to spend a bunch of cash for swatches ,I'm looking for a matte black , matte brown(darker) and a matte dark olive green ....any have any suggestions of specific colors ? or some pictures they can upload of stuff they have done using Columbia's stuff .... also is there a better type to use , Whats the difference between TGIC ,polyester ,urethane ....are any one of them better for coating jigs?