Thanks mario, I'm having fun with the new Beta!

>>in which program did you render the blue image?<<

If you mean the second image in my first post it's just a screen capture of an Adobe Acrobat file,
you can download the attached PDF file that's at the bottom of the first post called FlowCelt.PDF.

>>also how you control the density of the pattern applied to the sphere?<<

The pattern density is controlled by the number of copies in the original which you see on the flat plane
you see in the first image-first post.

Here is the same pattern with double the density mapped to the left sphere: