Here is the previous fractal with a monochrome palette. This formula has potential, I have played with it in the past and will likely return to it in the future.
Here is something with the hot palette from the Sequence Fractal series. Back then, I decided that it did not fit. Today, I decided it deserves a place in the footnotes series.
I created this one as part of the Sequence Fractals IV series, but then decided that it did not fit. I felt it had potential. I returned to it a couple of times, but I did not get anywhere.