I've been setting up the colors of the marbles if I do decide to make marble races. However, I only have 62 (and 2 special) colors listed. Can you help me out here? There's space for 10 (and 6 specials) more.
Roster and criteria: https://imgur.com/a/twcxKgH
Thanks in advance.

Create a chart in which you group each general group of colors (reds, purples, greens, etc) and figure out which is less common within your dataset. Afterward, I know that Wikipedia has for colors, a bunch of variations on them listed, from which you can draw.

Green - Chartreuse, Avocado, Sulu, Lime, Green, Mint, Turquoise, Sea Green, Aquamarine, Viridian, Clover, Emerald, Tea, Apple (14)
Blue - Cyan, Teal, Sky, Azure, Cerulean, Maya, Blue, Navy, Periwinkle, Diamond, Sapphire, Ice (12)
Orange - Orange, Brown, Peach, Bronze, Tan, Khaki, Coral (7)
Pink - Magenta, Violet, Pink, Rose, Raspberry, Hot Pink, Ruby (7)
Yellow - Yellow, Olive, Lemon, Gold, Dandelion, Ivory (6)
Purple - Purple, Indigo, Lavender, Orchid, Amethyst, Lilac (6)
Red - Red, Maroon, Salmon, Crimson, Scarlet (5)
Gray - Black, Gray, White, Silver, Shadow (5)

@Master_Shredtail, what about the special marbles? They're not really colors.

Spirals, checkers, crosshatching, gradients (you can also have various color combinations of each of these designs for a bunch more possibilities)

Edited 4/18/2021 08:05:45

Thanks.
I managed to fill all 10 of the single-color empty spots.
Newcomers: Royal Yellow, Banana, Apricot, Mardi Gras, Wisteria, Cherry, Carmine, Lava, Xanadu, and Onyx. I'll look for the other 6 empty spots in images. Thank you!

No problem!

Liechtenstein flag marble

Use Warzone colours

Tyrian purple, royal blue, etc