Foto: "<a href="https://ccnull.de/foto/iridescent-palette-of-colored-paper-rainbow-colors/1014979" target="_blank">Iridescent palette of colored paper, rainbow colors</a>" von <a href="https://ccnull.de/fotograf/marco-verch" target="_blank">Marco Verch</a> via <a href="https://ccnull.de" target="_blank">ccnull.de</a>, <a href="https://creativecommons.org/licenses/by/2.0/de/" target="_blank">CC-BY 2.0</a>