Since you're on the look-out for spider-things, have you thought about having a brand make a custom color for you?
Hello Waffle has this service (we'll see what happens when her store re-opens) and so does Dawn Eyes Cosmetics (she's doing custom colors to fundraise for her sister's hysterectomy):
http://www.dawneyesosmetics.com/kates_colors.html - the site is difficult/geocities-esque and even though the page says the custom color thing is over, it's actually not. I've heard the owner is very responsive to emails and a lot of people are happy with their custom colors. She's going to sell the custom colors in a collection called "Kate's Colors" in the future - I'm waiting for this so I can finally make a Dawn Eyes order
/emoticons/
[email protected] 2x" width="20" height="20" />
EDIT: Victorian Disco used to have a shade called "Follow the Spiders" - but it has been discontinued