A change from the strange attractor series: semi-transparent concentric arcs radiate out from the centre in overlapping layers, each new arc starting where the previous one left off.
Variation of the line thickness produces different textures, while changes in the maximum arc angle influence the density of the image.
Each time selecting different upper and lower limits of the brightness ranges of each of the RGB colour components produces a diverse array of colour sets, from single colour to full spectrum.
Six with fine line thickness:
Six with medium line thickness - individual lines and overlapping layers now visible:
Six with wide line thickness, producing interesting combinations of compound curves:
Three with overlap level set so that each line overlaps two thirds of each adjacent line:
Two with overlap level set to three quarters, producing a smoother gradient of colour mixing:
And just to see what would happen, two with overlap level set to nineteen twentieths: