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Oh yeah it’s done, can’t put much more graphite on top of that iris. I’d love to do a colour version but I’ve got to save up for a sweet stack of these godly coloured pencils that make me drool every time I see them. The eye I was referencing was green and brown.

I don't imagine color has much impact on shape, maybe shading?
I could imagine it brown or green but it just didn't look blue.