title: Is there any way to swap entire tile palette, not only some tiles?
body: <p>I'm recently working on 2D game with Unity.
  I made all the prefabs of the rooms with tile map. The problem is that each rooms have 4 random concepts and all tiles' appearance should also differ depends on room's concept; for example room's appearance is same but there exist forest room, ocean room, mountain room, and cave room.</p>
  
  <p>What I've tried was to make lists of all tiles and swap each tiles when room's concept is determined. But I thought it was quite inefficient that there are over 50 tiles per one concept of room, so it'll cost some memory.</p>
  
  <p>So what I expect is to change entire tile palette to get the same result with it. What should I do?</p>