Sure, but attracting attention can be achieved more easily than blending in. If you're wearing OD or camo it's good practice to keep a large, bright plastic bag or tarp. When deployed properly, it will be seen a good distance, much better than a neon blue backpack. But if all or most of your gear is painfully bright and you look like you just went to a rave party you'll have a very difficult time blending in or even camouflaging should the need arise.