Sistine Chapel - StumbleUpon. How Hangovers Work". Kaleidoskop.swf (application/x-shockwave-flash Object) Street Art by Pavel Puhov. How to grow a Rainbow Rose, Naturally - StumbleUpon. In 2004, two dutch companies, River Flowers and F.J.
Zandbergen, experimented and successfully grew a rose that had its petals rainbow colored. As petals get their nourishment through stem, the idea is to split the stem into several channels and dip each one in a different colored water.