Flex 40 - Swimbait tails - colors

I am trying to get information on how to get the proper color in my swimbait tails using flex 40 and either dye or dust. My molds are almost done and ready for flex 40. Most importantly are a natural fish green or ayu color and grey are most important. My guess is you can mix dust to try to get the right tone. here are links to what I am looking for:

www.tacklewarehouse.com/Gan_Craft_Jointed_Claw_178/descpage-GCJC178.html

img.tacklewarehouse.com/watermark/rs.php?path=GCJCMST-BS1-1.jpg

 THanks