Thank you Elden, Bruce, Brian and Vince for your replies.

I will go looking for aircraft interior black, rubber, Gunze Sanyo flat tire black, and Nato Tri Color Black. Checking Testors site, Rubber, it is not available in acrylic only enamel - probably why I couldn't find it.

I also agree that Oily Black does really well for oil spills, but you guys

need to tell me why; is it bluish?

I really like oily black. It is great for truck journals. Here is a link to Ned's models in the photos section.
http://groups.yahoo.com/group/STMFC/photos/album/20463649/pic/620723233/view?picmode=&mode=tn&order=ordinal&start=1&count=20&dir=asc
I find many oils to have an irridescent look to them as they refect light. Perhaps they are trying to achive this when formulating the color.

Ned Carey