The top left statue is Besaid, the left middle is Machalania, bottom left is Zanarkand, top right is Bevelle, middle right is Djose, and bottom right is Kilika. You don't have to do every temple over again-- if you lit up the statue, you opened the chest. Just go back and re-do the temple whose statue you didn't light up. I'm not sure which one is the yellow one, but whichever one you missed, go back to the temple and make sure you get the destruction sphere and the treasure chest it "unhides" instead of just meeting with the Fayth at the end of the trial (I made this mistake).