This is a diagram showing the colors used to display the previous image "Julia Large Blues & Grays."
The left side of the diagram represents pixels with low iteration values. The right side of the graph represents pixels with high iterations values.
(There are no pixels with very low iteration values in this plot, and very few pixels with high iteration values, so the left and right edges of the diagram have been cropped away to make the diagram smaller.)
At the bottom is a color bar showing the colors used to display pixels from the plot with different iteration values.
The top of the diagram displays information about the plot, and about the color scheme used to display it.
The blue graph is a histogram of the plot, showing how many pixels there are at each iteration value.
The red line shows the cumulative total of all pixels, calculated from right to left. (or the area under the blue histogram curve, from that point to the right edge of the graph.)
The green lines show the color transition for each color color gradient used to color the plot.
This plot uses 4 distinct color transitions from a start color to an end color. When the green line is at the top of the graph the color is at the start color, and when the green line reaches the bottom of the graph the color is at the end color.
Fractalworks includes a flexible color scheme editor that lets you set up color schemes to display your plots, and see changes to the color scheme in real time.