Striped Standard Bearded Iris Seedling

This seedling from the cross KEIRITH x CLOWN PANTS could be a fun path to explore. Striped falls (3 lower petals) are fairly commonplace among bearded irises, but it's a little more unusual to find striping up on the standards (3 upright petals). I've already got a few seedlings from it, but none have bloomed yet. This seedling is a 24 chromosome diploid, but I'd like to get this pattern crossed over into the tetraploid gene pool.