The Flakes texture node generates a flake pattern consisting of a series of random sized and colored circular shapes (figure 1).
Figure 1: The Flakes node and it's associated parameters
Base Color - Determines the background color under the flake shapes.
Flake Size - Determines the general size of the flakes.
Flake Size Variance - Sets a variation in the size of the flakes.
Blend Factor - Determines the blend value between the background color and the flakes.
UVW Transform - Positions, scales, and rotates the surface texture.
Projection - Sets how the texture projects onto the surface.