Graphical artifacts could also be sign of a problem on your end. GPUs have a habit of doing strange things like this when they overheat or are on the verge of dieing.

I myself have a ATI Radeon 6990m which is a pretty similar notebook GPU to yours and I haven't seen this happen with Arma 3 Alpha.

Last thing I want to say: try updating your GPU driver. I'm currently running AMD Catalyst 13.1 which supports your card as well.

I also agree that the DXDiag is probably not needed but there's always a possibility of this issue being related to the GPU. ATI users may experience this issue while Nvidia users may not. Vice versa..

Good point on attaching it instead though.

The issue seems to be resolved from the latest Arma Dev Build for me. Take a look at the jpg I uploaded. The watch isn't the same green tint as the compass but it is still visible.