I decided to drill out the recessed sections on the tube stripes and add a blue section underneath. I drilled them with four or five holes using a Dremel.
I then used the same bit to remove the small amount of remaining material between the holes.
Afterwards, I used two files to sand down the openings. I then used 400 grit sandpaper to clean up the openings.
In order to drill the final three stripes at the rear of the tube, I removed the clamps that snap the front of the helmet to the back of the helmet. They have two small screws and are easily removed. I also hollowed out the inside of the helmet under the stripes so that eventually I can lay the blue underneath and have it lay flat behind the hollow stripes.
I still have a little cleanup but they are 95% finished.