metalColor(c [, angle ])

Creates a color by modulates the brightness of another color to create metallic shiny effects.

The brightness of the color will vary smoothly across the image in a given a direction, so as to produce a shiny effect. The modulation period will be the same as the size of the image, so this method is best use to create background colors.

Argument	Default	Description
c	(Mandatory)	The color to be modulated.
angle	90	The direction for brightness modulation, specified as a clockwise angle in degrees, with 0 being the upward pointing direction.

A 32-bit integer representing the metallic color.