Please take a look at this forum thread:
http://forums.bistudio.com/showthread.php?155934-Arma-1-18-menu-graphics-FIX-blur-menu-graphics-fix
there should be a possible solution for your issue.
You can find the 1.14 arma.exe here:
https://app.box.com/shared/lqxxcl09fancj6x0lwii
Please note that multiplayer will not work after you replace the exe.
Thank you for understanding.