Here is an attempt at photoshop...
As requested...slightly darker. on edit: When I compare them side by side this second pic is darker but it's hard to tell looking at them on the board.
Titanium itself does that... looks a different shade depending upon all sorts of things. HOWEVER, the real problem is that Titanium is a metallic paint... a heavily metallic paint... and thus, that pic, while interesting, doesn't look too much like Titanium.