Tough to say I see some brown and I see some gray... and it's hard for a picture of a gem to get the exact colors one would see in person. It would help if we saw a side view of the gem. Brilliant cuts viewed from the top hide and adjust the true stone color.
I thought it was brownish too, but wanted a second opinion. I like the shape; its a very elegant looking pear, but it doesn''t seem like a true gray to me, which is what I was looking for.
You really shouldn't buy a colored diamond from a static photo. If you turn move that stone around, and look at it in various lighting, it will appear more or less grey. Grey diamonds can shift to a more grey cast in certain lighting.