An icon must be purchased in order to download it in a new color. You will either need a yearly NounPro subscription or purchase the icon with pre-paid credit or individually for $2.99. Free account holders can unlock the color tool by upgrading to a subscription here, thenounproject.com/accounts/signup/pro/
To change an icon’s color, simply find the icon you want and select one of the preset colors options found beneath the icon. Select the dropper icon to find the perfect color or simply enter the hex value if you already have a color in mind.
Once you are happy with your color, select download and your icon will download in the color you chose.