words: June is so full of color

Did you know that Gilbert Baker used the Pantone color scale when
designing the rainbow flag? I suppose that's not too surprising. There
are also other color scales like munsell and werner. I guess the rainbow
itself is a color scale, with its seven "roygbiv" colors. (It's also
a fish, with both a tail and scales.) We have so many ways to measure
color on so many different scales. And it turns out "pride" itself is
a scale.

Updates #words

Signed-off-by: Will Norris <will@tailscale.com>

words/scales.txt

@@ -496,3 +496,17 @@ parrotfish
 triggerfish
 tench
 shiner
+pantone
+rainbow
+munsell
+werner
+hue
+saturation
+gamut
+chroma
+tint
+shade
+luma
+spectrum
+roygbiv
+pride

words/tails.txt

@@ -832,3 +832,4 @@ swordtail
 oarfish
 newt
 olm
+rainbow