From the manufacturer:
StarBrite Rusty Orange is a dark rich orange that can be used as a mid-tone for doing realistic rusty effects.
This color is a great color to use with Vampire Red when trying to make a more toned down orange that doesn't distract from other saturated colors in the piece.
Also works great for a nice, warm wood color like you'd see on a sunburst guitar
Gauge Size
The gauge size is the circumference of the smaller bar in the middle.