How did the bright colors of some World War II tank camouflages

Was the Matilda II actually painted blue during WWII? If so, why

British military vehicle markings of World War II - Wikipedia

Events

Wargames Obsession: Late War German Armour: The Hinterhalt (Ambush

Camouflage Profile Guide 1945 German Colors – RZM Imports Inc

What color were tanks during World War II? - Quora

WW2 Armor

Did tankers in WWII paint over their tools when they went to apply camouflage? - Quora

Is smoke still used as camouflage or cover for modern tanks, similar to its use in World War II and the Vietnam War? - Quora

WW2 Armor