For some time I have felt it is a shame that I cannot sell my polymer clay mosaics/creations for outdoor use, as the colours will fade if exposed long term to sunlight. How much and how quickly this will happen, I do not know, so I have decided to set up a trial. I wanted to get this going now, as we are just entering the summer months (in New Zealand) and our sunlight is extremely harsh, so it will be a good test.
I am currently using the New Zealand made brand of polymer clay, called Du-Kit, as it has been hard to get Sculpey Premo (my prefered brand) since the Covid Lockdowns. To save mixing colours, I am using the ends of some canes that were made for a project, which have a range of colour blends within a particular hue (shown to the left in the photo below). I have also included some neutral colours (shown to the right in the photo below): black, grey made from 50% black and 50% white, white, pearl, transluscent and Super Sculpey (grey).