Suprisingly Mosquitoes are not attracted to color as much as they are attracted to smell. They can also be attracted to your body heat and the movement that is around them.
Mosquitoes are most attracted to dark colors because they look for prey in shady areas (such as under trees and in thick vegetation). Therefore, wearing looser light-colored clothing with long pants and long sleeves is recommended. According to the Discovery Channel mosquitoes are more attracted to the color blue than to other colors.
Most insects including mosquitoes are attracted to the color blue the most. Reds are the next popular color followed by oranges and then yellow. Stick to White, Black, Brown and Green as good colors to wear.
Mosquitoes are known to be attracted to darker colors if anything. They are much more known to be drawn towards certain smells and compounds more. They key is certainly to stay away from dark clothing and keep yourself clean. Any uneccessary body odder will only make yourself a bigger target.