Car/scooter vinyls

I am looking for a roll of vinyl so I can make a decal for the side of my scooter.
I will be making it myself, so the raw vinyl off a roll would be fine. Would also be interested in getting it custom cut, if it’s in my price range. I design, they print.

All I have been able to find so far is carbon fibre. I just want a plain color.
Not sure how much I need, or even the color. I just want options.
If anyone could point me in the right direction to a shop in Taipei, it would be appreciated.