I have doubts about the importance of visual recognition of food for most mammals. Birds have very acute color vision and might break into a transparent, odor-proof food bag if they can see colorful foods, but I don't think a mammal would.
Most rodents are dichromats (they see everything in gradients of blue and green), and a few are monochromats (they see only black and white). The visual acuity of an average rodent is equivalent to a colorblind human with 20/600 vision. Canids and mustelids (i.e., foxes and raccoons) are blue/green dichromats, and have very poor to nonexistent ability to distinguish colors. Black bears are also dichromats, but have demonstrated an ability to distinguish some colors. Humans and birds are trichromats.
I would wager that no wild mammal would break into a clear plastic bag containing odorless plastic models of food, unless it had a habit of indiscriminately breaking into containers of all kinds. I don't think there would be any difference between clear and opaque food bags.