...deer are supposedly colorblind...
This is a myth...
Their eyes have rods and cones just like yours...
The really big difference in the ratio of rods and cones, and the density thereof, determines how color is perceived... and what level of priority color will take.
So... look at it this way...
A deer sees colors in the light, about as well as you see outlines in the dark.
The deer is mostly unconcerned
with colors but is very concerned with movement and shapes... which pose the greater threat to him.
He can see you blink
a lot farther off than you might think was possible.
Camo is definitely beneficial
with movement and shapes, and somewhere down the list, color plays a low priority part in the deer's survival.