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Hi there.

Sure applying any sort of texture or colour pallet to a fractal is tricky and fickle at the best of times. Might i suggest trying out a 2d fractal program and see how the colours lay on that, when you get a comprehension of that adjusting them on 3d is a little easier. However its always a gamble, and any tweak usually results in drastic changes simply due to the nature of the geometry your applying it to. If you've had any experience with mapping and colouring with regular 3d graphics, well now is the the time to chuck that all in the bin, at least when it comes to applying and controlling texture and colour.
I think I understand what you mean, like you try so many colour themes and they all look amazing, you just cant stop, the next tweak looks better then the last..etc etc, and you might often end up with a bewildering choice.. but that is when the artist in you should step in. The artist in you will know which one is best depending on what medium you indented to use it for, which brings be onto my next point. In my opinion one colour theme looks great for one medium but not ideal for another, for example more vivid and high contrast is great for print, and will display well on a wall, in all light moods, and viewing angles and distances... the same may not be true for magazine prints, and then electronically displayed images such on on monitors, tv`etc is another kettle of fish altogether, so that is another thing to also keep in mind, think of the medium your producing it for.

As you also mention, yes indeed colour and/or texture is only half way there, composition, lighting focus and mood.. again here we can endlessly tweak and make something better then the next, but again think of your medium, and the artist in you will do the rest.


best`o`luck
pan

Ah ok, im sorry, I must have got the wrong end of the stick, however Im still unsure what it is you mean, are you talking about how the brain/mind interprets certain images, colours , patterns?... or perhaps some sort of mathematical or scientific method of determining the right image?

lol, right ok, now i see.. and im sorry again.. half asleep here (past 2am)
Well the readme that comes with it briefly explains each option, I have not studied it too much myself ... im sure the forum here has some help on a better explanation of the various settings.
sorry again for misunderstanding you

regards

My fault here i was not sufficiently clear :
Colors or Lights  have no effect on Render time, EXCEPT the options located in the "coloring" tab (under the julia mode tab ) changes there require render again to take effect (at least so is written in the tooltip ) and was at that options that i was referring now

Ah, OK
Well after dinking around with the diff options there for hours I now only use either Orbit Trap or LLI, routing on axis and Map Vectors just never give me what I want, almost alwys use LLI for Reflections or Object Maps on Normals. If there is a Render time difference it should be minimal, I never really noticed so it must be minimal.
Another thing that has a great affect on image appearence are the type of Shadows, scene specific or Distance Estimated. I used SSAO24r and ZRthresh for a long time, now I almost always use SSAO24r Thresh to 0 and Adjust ZR thresh, more realistic to me

Last Length Increase.

Hover your mouse over the number entry field for this, and many other things, and read the pop up description of many features that are otherwise unexplained