One of the features in TerrainControl allows you to paint the biomes by creating it from an image.

I was wondering if there way any way to combine XtrabiomesXL (in MCPC) and TerrainControl and give each ID of the biomes from XtrabiomesXL or Biomes o' Plenty a color code so TerrainControl could render it using an image.

ExtraBiomesXL and Biome O' Plently both use their own biome generator. It is up to them to support an image map.