color and perception

Numerous are the conversations (and the thoughts) I have had in which I've pondered color (yes, as in the rainbow). It usually goes something like: "What a beautiful tree (for example)!" "You know, we're both looking at this stunning tree, and we'd both say that the tree is brown with pink and white blossoms. But what if what I call pink and white is what you call purple and green? I may be looking at a tree with a yellow trunk, and purple and green blossoms! We might be seeing totally different colors, even if we've learned to call them the same thing!" Anyways, I came across this BBC article and felt like I was reading a script of one of my conversations...I couldn't help but share. Enjoy!