Neil - so That's what I planted at the church's sanctuary - good filler for the bottom of a Hibiscus!
It was Heuchera! I just thought the lime green would stand out as a bright colour, and it's perfect! Only thing is, I've never grown it before, and trying to figure out the water/temperature likes/dislikes. It I put too much water on it (the Hibiscus likes a lot) then it looks "wilty" and it seems to like cooler temps. it would be an annual here, so needs to be inside, I take it......