All you will need are a lot of flay hammers. 1st go to the stone mana's cave and harvest as many gravity stones you want. synthesize these into gravity crystals and sell them each for 500each. repeat and you will have enough money to buy a lot of green, yellow, or whatever color you want. i bought about 5 green mana easily this way. it takes a lot of time because you have to live the church entirely for the stones to respawn.
Extras Menu - To unlock an Extras menu with bonuses like Theater mode and 10 extra trials, complete the game and save.
Ultimate Trial - To unlock the ultimate trial, complete all 19 original trials and 10 extra trials (ones that unlock after beating the game).