I guess a scientific supply place would have the Tygon Fuel type tubing. I do recall having that stuff for chemistry usages and it was softer but clear like the stuff I bought at OSH. I think I still have the package from OSH and could get the brand name, but I know it was not Tygon. Just did Google search, lots on Ebay. 19 bucks after shipping cost totaled for 10ft translucent yellow gas fuel line Tygon brand.
Anyway I was able to put the line I have been using without a tight bend, so will stay with the black rubber type, but thanks for that forming the tubing idea!
Would this be stuff that would take the bend shape and stay.