My only suggestion is to soak the wrap in water before installing and use long sleeve shirt and gloves... probably a mask of some sort as you can see the flakes of glass floating in the air..

Instead of the wire to secure the end, I started at the engine and worked my way to the collector.. at the collector, I used a large radiator clamp to secure everything..

I hadnt thought about the spray paint, but it sounds like a good idea and probably worth trying..