There's very little organic pigment used these days, maybe by purists that grind it themselves but most pigment is synthesised in a lab to give the pigment the ability to handle the exact properties you mention, solvents, high heat, alkaline or acid environments etc etc. yer no doubt some solvents or acids or alkalines will eat into those bonds you mention, also why your bleach works, as sunlight does the same thing, breaks down normally one bond to make it appear invisible to our eyes by taking it out of the viewing spectrum, the stain is likely still there, ya just can't see it LOL, so yer I do agree those bonds can be broken, but can they also be created?..But lets say we added a pigment to say an water "bourne" paint as the thread is about AA and I dont call that waterbased personally. Ultimately within that emulsified water bourne paint you have you little pigment/binder, suspended in a little water that has been emulsified to sit in a little bubble of solvent (or the other way around, can never remember), add pigment to it, where wld it go, no doubt it wldnt find its way into those little bubbles of water withing the solvent so the solvent may eat it up, but does it destroy the pigment, render it invisable or dye the solvent? (Remember a bonding agent hasnt yet been added, but that doesn't mean it wouldn't work), it likely will clump at the bottom but that depends on grind size and the viscosity of the suspending solution, it may fade off quickly as its not bonded to the next pigment (Unless you add a new bonding agent) or yes the solvent may eat it or the bonding agent up but, the bonding you mention is the bonding between the pigment and the binder to the next pigment so on so forth, so if its a minor solvent as used in most water "bourne" paints because that solvent is water soluable, that may not be strong enough to eat up the pigment created in a lab to handle such minor solvents, and you also add in a new bonding agent, whats the worse that can happen LOL..maybe a richer more vibrant layer of pigment, that will help that transparent appear more opaque but likely may wear out quickly in the sun or with bleach
, but some of those loose pigments may be re-bonded chemically or physically through the atomization process as there is spare pigment floating around and spare bonding agent, they may just find each other and hook onto the matrix the paint will already create, maybe not, but that's the fun in finding out and then thinking why didn't that work or what can I do to make it work or shiz that worked awesome..
LOL
But ya know I love stirring ya