Well, this will be the first time I starch this particular collar, so if I starch again and again, then by your logic I can expect it to retain its shape over time.
Being the Victorian clothes hound I am, I have a wide, black silk cravate and a mint green thinner one from Corner Clothiers. I also found a yellow, cotton strip which was originally for tying around a tree to indicate the location of my field dressing station. Turns out it's almost the same size as the black silk cravate, so for "g-its and sh-iggles" I tried it on. It works, assuming the character wearing it is a real fop who does not mind wild colors and clown references by passers-by.