Male crocs display brow crests above their eyes. These can be colorful or match the croc's base color or markings.
If making the eyebrow crest colorful, you will need to choose either the base color or the base coat's complementary color on the color wheel.
For example a Croc with a Blue base would have red/orange/yellow as their complementary colors.
When coloring the crest, they can display either the marking laying below it, a gradient, or a simple marking such as spotting or striping.
Can be a solid color
Can have simple pattern/marking
Can be the complementary color of the base