Doesn't need pin striping IMO as with that textured finish there is plenty going on visually already.

If you were really, really brave you could tape off an area that you wanted to paint on some pin stripes before laying down the clear top coats. To apply the colour a spray can might be best and maybe you could use one of those high viz orange ones they use for marking things out in the construction industry from the building or landscaping section at the big green shed or similar establishment. Because they are being used as a temporary marker bet they will be cheaper than high grade stuff.