I like the black and gold. I like it a lot, especially since the heart is mostly dark colors right now.
Although I'd love to do a hyper detailed pillar, it's unlikely to make it in game. Any large details that dont happen on the surface of the pillar have to be actual geometry, I'm trying to avoid that as much as possible, although small detail that deforms the surface of the pillar is doable.
Now there's the actual design.