Customization
Customization is a minor gameplay mechanic of Assassin's Creed II. In the Tailor shops in all of the cities, the player can dye Ezio's clothing, all though the possible color schemes depend on which city they are in. You can always switch back to your normal color, Assassin White, for free. You can unlock the achievement, "Perfect Harmony", by dyeing your clothes with both Wetlands Ebony and Wetlands Ivory, both colors are available in Romagna/Forli.
While wearing Altaïr's Armor, dyeing only causes the colors of the inside of the cape to change.
Here is a list of the Dye's available, where and the cost.
Florence
Florentine Mahogany - 560f
Florentine Scarlet - 550f Florentine Crimson - 1200f
Monteriggioni/Villa (prices decrease as Tailor is renovated)
Tuscan Ember - 1425f originally; 1354 at 5% renovation; 1283f at 10% renovation; 1212f at 15% renovation
Tuscan Emerald - 500f originally; 475f at 5% renovation; 450f at 10% renovation; 425f at 15% renovation
Tuscan Copper - 245f originally; 233f at 5% renovation; 221f at 10% renovation; 209f at 15% renovation
Tuscan Ochre - 500f originally; 475f at 5% renovation; 450f at 10% renovation; 425f at 15% renovation
Tuscany / San Gimignano
Tuscan Ember - 1425f
Tuscan Emerald - 500f
Tuscan Copper - 245f
Tuscan Ochre - 500f
Romagna / Forli
Wetlands Auburn - 500f Wetlands Steele - 380f
Wetlands Ebony* - 2300f
Wetlands Ivory* - 150f
Venice
Venetian Wine - 1980f Venetian Azure - 450f
Venetian Teal - 500f
(*Need for "Perfect Harmony" 'Achievement')