Reading the splits. Each tile is filled left-to-right in proportion to how much of that element's solar-system supply each process made. A single color means one dominant source; two or three colors means the element is a genuine blend. The clearest story is in the heavy elements: the slow neutron-capture process (green, dying low-mass stars) and the rapid process (violet, neutron-star mergers) trade off element by element — strontium, barium and lead lean green; europium, platinum and gold lean violet; molybdenum, tungsten and mercury sit near the middle.
About the numbers. These fractions are approximate, model-dependent solar-neighborhood estimates, rounded to convey proportion rather than exact values — the framework follows astronomer Jennifer Johnson's origin-of-the-elements chart, with the slow/rapid split drawn from standard decompositions (Sneden, Cowan & Gallino 2008; Bisterzo et al. 2014; Prantzos et al. 2020) and the iron-peak Type Ia share from galactic chemical-evolution models (e.g. Kobayashi et al. 2020). The first-peak elements (gallium through zirconium), fluorine, and several others carry real uncertainty of tens of percent. The trans-bismuth natural elements are shown as rapid-process products, since they exist as long-lived r-process nuclei or their decay chains.