Texture painting isn't showing up on mesh I am currently trying to paint a texture on my mesh and it is not working. i brought up the UV image editor, made an image texture, selected mesh and unwrapped it. I then created a material and selected my image texture as the color. I try to go into texture paint mode to start painting but nothing happens. I have tried to flip normals being i saw someone else have the same problem and that was their answer but not for mine. Any help?

This is my .blend file:
I have no problems painting with your file as is(just changed color) and I am on OSX El Capitan as well. I opened your file after download with 2.78a and just changed the color of the brush and started painting.