At last the palette constructor has been created. This is a first draft. It lets you create a palette and shows some sample images using it. The idea is eventually to allow you to apply your palettes to any of the fractal image files held on the site.

The constructor uses the 140 colours defined in CSS Color Module Level 3
 extended color keywords list. These are usd to define the start and end of colour ranges to create a palette that will normally contain 256 colours. For example black-red-white will create a sequence of colours shading from black through to red and then to white. the sequence black-darkred-red-pink-white should create a similar sequence but the two palettes will not be identical.