Curious myself as I couldn't find any information aside from pinks or whites, single or double flowering. I have an old perennial double pink gypsophyla- definitely pink but not approaching rose or red.

No help, I know, but you'd think if a red variety existed it would be popular enough to get internet space.

I found several listings of a red annual Gypsophila, but didn't find any images.

Thanks for the responses, I'll keep looking!
Kat

I'd be highly suspicious of it - especially since they can't seem to provide an actual photo of it. Gyp. muralis (annual) has some very deep rose cultivars, but I would never call them red.