I think the grass that's growing is probably just seeds that were on the soil when they covered the hill. I started noticing a bit of green on the hill about 2weeks ago. Also, they've been laying down gravel around the hill to place the concrete on.
I think it's going to be gorgeous, especially when the crown and phase 2 are done. It doesn't look to beige, and I think it has just enough deco accents to give it a touch of class without being tacky, but I guess we'll have to wait and see!