HOW TO ENTER THE COLOR DUNGEON AND GET THE RED/BLUE TUNIC

To enter the Color Dungeon you'll need the Boots that you get in the Key Cavern (3rd Dungeon), go back in the Library in Male Village and run against the Back Shelf to make the book fall on the ground. Reading the Red Book you'll find a Code that you'll need in the Graveyard. 

You need to move the bottom right Tombstones in the order written in the book to unlock the entrance of the Color Dungeon.

You'll need to clear the dungeon and once reached the end you'll find Fairy that gives you the option to choose between the Red and the Blue Tunic:

- The Red Tunic double your damage output

- The Blue Tunic halves the damage taken by enemies

For a detailed walkthrough check the video below: