He'll provide all the info you need to make an intelligent decision regarding this project. I was disappointed to see that they are already badly faded and appear to be rotting. Yes, Yale makes Colorline Docklines in a variety of colors that are highly resistant to both fading and abrasion. This is the only lifetime warranty of its kind in the industry that I am aware of. Yale's Colorlines use Fiberbrite 2000 fiber.
Fiberbrite fiber is colored prior to the extruding process, so the color is part of the rope itself.
Yale's Colorline Docklines are designed and manufactured to be the last dockline you ever need to purchase for your boat. I race an Optimist Pram and I want to start the upcoming racing season by replacing my old mainsheet, control lines, and sail tie-downs. Nothing worse than starting off your racing season by losing a race because of an equipment failure. As you know, it's important to be sure that the mast ties are tied very tightly, so that the sail stays against the spar. I'm tired of struggling around the race course with a cockpit full of sheets and halyards that hockle, kink and jam up in the turning blocks on every tack and gybe.