I am embarking on a construction project that will require hundreds and hundreds of blocks of colored wool. Thus far, after all my adventuring, I have about 70. Is there a way I can practically mass-produce wool? I don't want to have to roam around looking for 500 sheep.
Sheep seem to spawn and despawn randomly, and they don't breed on XBox, so I don't know if they are farmable. Even if they're not, is there a way to encourage them to spawn or congregate? Or, is there any other way to get wool?