Nikolay Dubovskoy. Rainbow
<bdi><a href="https://en.wikipedia.org/wiki/en:Nikolay_Dubovskoy" class="extiw" title="w:en:Nikolay Dubovskoy"><span title="Russian artist (1859-1918)">Nikolay Nikanorovich Dubovskoy</span></a>
</bdi>
<span class="int-own-work" lang="en">Own work</span>