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They are truly lovely, congrats on your work.

Thanks.

As an outsider in the world of fractals, I have to admit that sometimes
I'm not fully satisfied with the palette choices even in great pictures I see around.

Maybe it's because I'm in a quite grim phase in my life, but I tend to prefer
"soothing" shapes and colors.

In my little program I did the following: I collected some palettes from Internet,
probably some came from Matlab, plus I mercilessly stolen a bunch of palettes from
Mathematica. I was too lazy to program a manual creation of a palette, color by color.

At that point I realized that using single palettes, even those that are non monochromatic,
often produced boring pictures, so I usually do the following:

I select a number of random palettes, say 4, and then I  create a new palette
taking  1/4 of the colors of each of the 4 random palettes.

In this way I have both sharp and smooth color transitions in the same picture.

Clearly, since I use randomness, I have to try a lot of combinations before I find
one I like, but is it a way to pass time. (I also store random combinations I really like,
to be tried later on).

To assign colors to values, I generally sort the values (or they logs) in all the picture and select
intervals in such a way that each of the 256 colors in the palette is used in about 1/256 of the pixel.

I don't know if this technique has a name, it seemed the natural thing to do.