From what I've read no. This link gives some names and information.

Here is a link that might be useful: variegated iris

The white will not become yellow when grown in sunlight. I grow both the green and white variegated and the green and yellow variegated. When I first purchased them years ago, I thought they were the same but as the plants matured the difference was unmistakable. They were grown in the same area with the same amount of light, water, etc. The yellow seems to grow a little taller and have slightly larger blooms than the white.

Thank you both. I will have to keep my eyes open for the yellow one elsewhere, then.

No, they will not change their variegation. Also, irises with yellow variegation are more robust, grow and multiply quicker and overall look healthier than the irises with white variegation.

On the picture below, you can see 3 of my variegated irises: 2 with yellow stripes and one with white. Growing conditions are identical. But Yellow-striped are twice as big, 3 times more flowers and are pretty much ready to be divided by their third year while the white-variegated are somewhat dwarfish and a very mediocre bloomer:

{{gwi:272943}}

I noticed Schreiner's has the yellow pallida variegata this year. Green Go's photo makes me think I need a few of those myself...

I grow both pallida 'Aurea Variegata' and 'Argentea Variegata', and have also noticed the size and vigor differences.
I've got a couple of other variegated varieties on order from Blue J, who lists several, and also a new one from Mid-America called 'Variegated Wonder'. The latter is a sport from 'Wonders Never Cease'. The pictures look beautiful.... Anticipation...