Great mod for 2.0! only 2 suggestion

Can you add the color orange so it match with the game color for heavy oil?

If possible, can you make it so with the upgrade planner, you have the option to change color of the pipes without placing it down one by one?

I'll think about the color orange.

To enable the upgrade planner, you can enable the mod startup setting to "use the same fast replace group" That also makes it so you can manually place pipes on top of each other. The disadvantage is that any fluid in the old pipe will be transferred to the new pipe, even if it doesn't connect to the old network and the new network contains a different fluid.