Resource like Unique Eyes but for Genesis 3

nikaraworld

I'm pretty sure I'm reaching quite a bit here, but is there any product/resource like unique eyes for Genesis 8 but for Genesis 3. I every so often like to create a character with heterochromia but it seems like the only options are presets with already defined colors or using programs like photoshop to do it, a thing I have neither the patience or experience to do. So is there something like unique eyes in which you apply a shell to each eye and choose the eye colors yourself or am I outta luck?

3dLux

Parris's Macro Eyes for Iray Bundle has heterochromia options.  it's not a geoshell but materials, though.  

This character is G3F