Quote from sleazanator
He's suggesting you download a texture pack to change the color.
Have you tried using MC Patcher or anything? You can't change things like grasscolor.png or other shaders without using a texture patcher, unless you want to directly modify the files in your minecraft.jar.
I am talking about my own texture pack on this
I have tried mcpatcher. I am trying to cheat mcpatchers CTM to letting me make orange birch leaves of my own texture, but I was asking if I would run into problems because of the birch leaves textures on the fast mode.