Nah, just everything different - colored. UPDATE: The boss is more colorful while making levels. The cave now has a black roof. Also, if you're wondering what the enemies are made of, the Mobs/Blobs, the Enemy 2/Big Blob, the Bird, the Stomp/Crusher, and Burtha are made of stone, and meanwhile, the boss is a giant spider, and the eyes are rocks.
Credit to griffpatch !!!