Variegated spiderwort

[Ethancactus]

Today I noticed a variegated stem on one of my spiderwort plants (don’t know what type), hopefully it grows enough that I can propagate it.

This is what a regular plant looks like.

[Ethancactus]

While I was potting up the previous variegated plant, I saw another hiding in a different pot!
I’ve grown this type of spiderwort for years, until now I’ve never seen it turn variegated.