Re: Changing the Glastron "stripe"
The purple tape is good too, but the green tape is generally preferred as it has the least amount of bleed through on the edges.
roll and tip, roll, or spray...whatever you are comfortable with. If you have a gun to use, then use it if you know how to use it properly ( right sized tips, air pressure, etc ). Otherwise, use one of the other methods typically used for boat painting. The better the quality of paint, the better it will flow and level for you. Also, make sure you buy paint that is as fresh as possible. If it has dust on the top of the can, stay away from it unless you are painting something just to get paint on it.