Invisibility

Whenever I go to a national park, I see many tourists (especially photographers) dressed up in camouflage pants, camo shirts, camo hats and camo scarves (even a camo handkerchief, in one marvelously entertaining case).  One can understand the need to "blend in" with the environment (come to think of it, their environment is limited to the seats of their safari jeeps, so shouldn't they wear clothes that match their seats?), but I think some take things too far.  The point I'm trying to make is, while blending in has its bonuses if you're stalking birds and monkeys, it's a completely wasted exercise when you're dealing with most other mammals who lack colour vision (in favour of better vision in the dark) from a safari vehicle.  All one has to do is make sure the general tone of your clothes doesn't stand out against the environment (including the safari ride!).