By: Abdullah Anik Misra
The color most pleasing to Prophet Muhammad (Allah’s peace and blessings be upon him) was green, while some said it was white. With respect to clothing, the Prophet (peace be upon him) encouraged men to wear white in numerous hadiths. Thus, according to the sunnah, it is preferred to wear white, as well as black and green. [Ibn Abidin, Radd al-Muhtar]
While wearing a green turban is not a specific sunnah, wearing green garments in general is from the sunnah, so one could wear a green turban to fulfill that.
It is important to note that the Prophet (Allah’s peace and blessings be upon him) himself wore different types of clothing from different places, and of different colors and designs, not just one style or color, though there would be nothing wrong if one chose to did this.