Just a bunch of eye colors in more natural colors:

Succulent Eyes - could be purchasable in the Flood Pit



Cocobolo Wood Eyes - could be either combo eyes or event NCL exclusive eyes



Snail Shell / Murex Eyes - could be crafted from Murex Shells



Rosewood Eyes - could be either combo eyes or event NCL exclusive eyes



African Blackwood Eyes - could be either combo eyes or event NCL exclusive eyes



Indian Laurel Wood Eyes - could be either combo eyes or event NCL exclusive eyes




Wenge Wood Eyes - could be either combo eyes or event NCL exclusive eyes



Padauk Wood Eyes - could be either combo eyes or event NCL exclusive eyes



Citrine Eyes - could be craftable



Pomegranate Eyes - could be craftable



Starling Eyes - could be craftable from Purple Satrling decor



Black Cherry Eyes - could be either a February exclusive combo eyes from maroon + rose X rose ebony eyes or just straight up February app



California Pipevine Swallowtail Eyes* - could be either a February/May NCL exclusive eyes



Star Fruit Eyes - hmmm... july event exclusive?



Turtle Eyes - maybe ncl exclusive?



Comet Eyes - could be craftable from Comet Pieces



* - these eye colors need name

Check out my other suggestions: