You'll get some color with the tonga/marshall island stuff, but it really depends on your tank and lighting. I've got a few spots of bluish/green corraline, like Joel, but most of my tonga rock is maroon and then encrusting purple over it. That said, I still prefer any rock from Tonga over Fiji, including branch and shelf rocks. But it's pretty slim pickings right now with the import moratorium on tonga rock. Marinedepot.com is a good sight to order from (fast/reliable shipping), but try to buy local if you can so you can hand pick the pieces.