Hi Richard,
Not to be too picky, but the answer is...depends.
Early-war 109s wore a splinter scheme of black green RLM 70 and dark green RLM 71 upon all upper surfaces, with a light blue RLM 65 bottom. This is usually annotated as 70/71/65.
Around the middle of 1940 the 65 was raised about 2/3 the way up the fuselage. Mottling of RLM 70, 71 and 02 gray-green, was often applied upon the RLM 65.
In 1941 a new fighter scheme was introduced, similar to the above but different colors. The RLM 65 was replaced by RLM 76, a blue-gray, and RLM 74 gray Green and RLM 75 gray-violet; mottling was as above.
Finally, around 1944-45, the RLM 74/75 was replaced with RLM 81 and 82, a brown-green and olive green over RLM 76.
During that time those flying over Africa were painted a brown-tan RLM 80 over RLM 78, a bright blue-gray.
That is 109's colors in a nutshell. Others on-site can give you more detail if you need.
This is a good site:
Don Color's Luftwaffe 
