Slow to change iris color

[donutweall]

Just passed our first year "gotcha" date for miss Potato. She still had some faintly visible barring on her head when I got her, so she's not too much older than a year, but her iris has been slow to change color. You can see a faintly gray ring in bright light, but it usually looks black.

Is this particular to her mutation, or is she just slow to mature?

 

[Kiwi's Dad]

Bump!