(TL;DR is in bold underline.)
Hi, this is my first post post on this forum as I am usually able to figure out what I need from searches/videos. Sorry if this is something I should be able to figure out but I'm hoping someone is able to help me (or that this is possible at all).
I use AutoCAD to draw HVAC diagrams in buildings and I was hoping to improve readability by creating a custom line that is black but has a user-set colour highlight around it. This would help colour-code and differentiate the various HVAC systems within the building. I have attached an example of how I would like this to look. I created this example by drawing a thick green line and then drawing a thin black line over it. This is the exact effect I'm going for but doing this manually would be time consuming. I know I could just choose different solid colours to draw the ductwork but I don't really like how this looks and I would prefer to have black lines to give a reliable contrast.
I would also be interested in a double black line with the colour inside, but I would need it to be as easy to work with as a single line (ie be able to have branching fillets, etc).
Thanks for reading.
