*Not that that's what Jayzus said.
Absolutely not; I've been researching it extensively while researching colour theory to teach my art class. Russians consider light blue a completely different colour from darker blues, and as such do far better than we would when matching shades of blue in tests.
But then, we don't call red 'light red' when it's mixed with white either, do we?
Still hard to get the head around a sunny country not having a word for the colour of a clear sky.
Also, bees see UV 'landing lights' on flower petals that we can't see, and garden spiders use UV to weave fake versions into their webs. I may well have thrown that fact into this thread before; I love the fact that miniature equivalents of Wile E Coyote's painted tunnels exist in the insect / arachnid world.