Umbala wePhotochromic luhlobo lwee-microcapsules. Izinto ezenziwe ngomgubo zinokutshintsha umbala kwilanga. Olu hlobo lwezixhobo lunempawu zombala ontununtunu kunye namandla emozulu amade. Inokongezwa ngokuthe ngqo ngokwemveliso efanelekileyo.