obsidian is now brown as of 1.8.1 . I use obsidian a lot to make black maps and message boards and now many blocks have a brownish color like red sand, others are just gray: block of coal, bricks, hay bail, and most other blocks. blocks should show up on maps the same color as the blocks' texture

reproduce by placing obsidian or another block mentioned and making a map with the block in it.

the texture is wrong