Anyone try growing this?

I've got two and neither are showing the dark leaves with a green
border. When the seedlings first started I could see the color, but
now they look like ordinary geranium leaves. Haven't reached flowering
yet (i started them late).

I'm wondering if it is a light/shade, feeding, maturity thing?

DiGiTAL ViNYL (no email)
Zone 6b/7, Westchester Co, NY, 1 mile off L.I.Sound
1st Year Gardener