From the manufacturer:
StarBrite Grassy Green is a bright, rich color that has just enough yellow tone in it to blend out nicely.
This color is great for traditional leaves, Hulk skin, landscape work, and more.
It is a very versatile tone that can be used in any tattoo work. Grassy Green blends extremely well with all greens.
This will work as a really nice highlight when mixing with Canary Yellow
Gauge Size
The gauge size is the circumference of the smaller bar in the middle.