I've read on Hydroponics sites that Light Temp range does influence grow/fruit stages. So that might be why yours didn't ripen. I had my Habenero growing in a 5gl bucket outdoors all summer. Only one fruit got ripe. Brought in in and it's under some shop lights with 5000K tubes all my green peppers did ripen.
My grow light are 6500K. I'll continue to post my results with the tomatos.