There are many beautiful charts and posters that people have designed over the years with the rarity of colors in sea glass. I have always referred to the book, Pure Sea Glass, Discovering Natures Vanishing Gems, written by Richard LaMotte. This is a great reference for any beachcomber to own! He explains each colors rarity and what the piece could have been derived from.
Here is the rarity of sea glass by color stated in Richard Lamotte's book, Pure Sea Glass:
Extremely Rare Sea Glass:
Orange sea glass
Red sea glass,
Turquoise sea glass
Yellow sea glass
Black sea glass
Teal sea glass
Gray sea glass
Rare Sea Glass:
Pink sea glass
Aqua sea glass
Cornflower blue sea glass
Cobalt blue sea glass
Opaque White Sea glass
Citron sea glass
Purple / Amethyst sea glass
Uncommon Sea Glass:
Soft green sea glass (seafoam sea glass)
Soft blue sea glass
Forest green sea glass
Lime greens glass
Golden Amber sea glass
Amber sea glass
Jade sea glass
Common Sea Glass:
Kelly greens glass
Brown sea glass
White Sea glass
My first Red Sea glass flat back I ever found February 28, 2018 with a bunch of great finds!!!
I had to take a picture before I snatched it up. Found this red sea glass walking the low tide line.
Below is one of the closest pieces I've found to Orange sea glass this is red with an orange swirl. Found December 26th, 2018
This sea glass necklace made with Akoya pearls and 14k white gold, custom made for a custom shows most of all the sea glass colors!
