Black isn’t the best camouflage at night, but at least it reflects no light so it’s better than light or bright-coloured clothing. Shades of greys are standard for night camouflage because they better blend in with surrounding. But similar to his black outfit in Goldfinger, Bond once again wears black to sneak around Largo’s Palmyra estate at night in Thunderball. The biggest problem with this outfit in the dark is the shiny buttons. Bond’s fitted black cotton long-sleeve polo shirt has a three-button opening at the neck, of which he fastens various buttons at different times, but never the top button. It has ribbed cuffs and a ribbed hem.
The black trousers have flat front with button-side adjusters and plain bottoms. Bond wears black dress ankle boots, probably the same as what he wears with his suits in this film. They are a shorter ankle height, fit with elastic and have leather soles, which are not the best choice for scaling a roof.
On another note, check out the article I wrote for Clothes on Film—On Her Majesty’s Secret Service: The Primer for Skyfall.