Summarize:

Khaki is the most popular safari clothing color, because it will help you blend in to your surroundings. During the dry season, wearing khaki, brown, or tan will help you blend in to the landscape. Sticking to these colors also helps to hide dirt. Your clothes will likely get dirty as you hike through brush or travel along dusty roads, and if your wardrobe is made up of mostly browns, tans, or khaki, the dirt will be hidden better. Depending on where you are for your safari, the rainy season will occur at different times of the year. Wherever you are during rainy season, wear greens and browns. The foliage will be greener and you'll blend in better. Bright colors - especially red - can scare of the wildlife you're on safari to see! White will actually attract the attention of game if you're on a walking safari, and make the animals more likely to flee. Blue has been known to attract the tsetse fly in Eastern Africa. Tsetses can transmit diseases that can make you quite ill, so it's best to avoid wearing blue and keep them away!. In most African countries, camouflage clothing is associated with soldiers. It might seem like a good idea to wear to blend in with your surroundings, but you don't want to mislead people about who you are or why you're there.
Wear khakis, browns, and tans during dry season. Wear browns and greens during rainy season. Avoid bright colors, including white. Avoid blue in Eastern Africa. Do not wear camouflage clothing.