I am posting this so you might know that there is a textured paint that appears to work pretty well.  It is Rustoleum, and I used it to paint the "Tip Over" wings on my Honda.  The previous owner had dropped the bike and these plastic parts were badly scratched and gouged.  I used a filler made for plastic bumpers, primed the plastic, then applied this paint in black.  Be sure to hold the can back about 16" while spraying to accomplish the texture.  I am happy with the way they turned out....and it saved me $ 75 by not having to buy new ones.

Since it is a spray can it most likely won't hold up to fuel.  It might work great for you on things like headlight or tail light housings, fenders, fork yokes, etc.

For around the farm here, I keep a gallon of black Hammerite Rust Cap from Jamestown Distributors, which dries with a shiny textured "hammered finish." With hazmat shipping, it's $100+ per gallon, but it really works to keep things a little less "rat" in appearance.  If you get some, use disposable brushes, not your expensive china bristles! The stuff is so fiber-filled and gooey that I've given up on cleaning out brushes, and just toss them.