A few years ago I built a frame in a local winter class and what took the longest was figuring out the paint. I wanted either a fade or a splatter since Im a product of the late 80s/early 90s and those are still the greatest paint schemes to ever grace this world.
Some options were a candy purple to yellow fade, a green base with red splatter, and glossy red with 5" yellow fade at each of the frame joints.
I ended up with a shimmering orange fading to a cream white.