During the course of the war many 109's were captured and tested by the Allies.

The ones tested by the RAF wore a great variety of different color schemes, varying from a simple overpainting of German insignia to a complete repainting in British colors.

Me-109 E-3 captured in France and sent to the UK in 1940. Painted in standard RAF Dark Green / Earth / Yellow scheme
(Source: War prizes)

Me-109 E-3. Painted in standard RAF Dark Green / Earth / Yellow scheme (Source: Wings of Fame 4)

Me-109F-4/Trop of III./JG53 captured in Africa and used as a squadron hack. (Source: Wings of Fame 11)

Me-109F-4 of 10./JG26 which crash landed in the UK on 20 May 1942 (Source: Wings of Fame 11)

Me-109G-2/Trop. This is the aircraft rebuilt as the famous "Black 6" in the UK in 1991 (Source: Wings of Fame 11)

Me-109G-2/Trop used by the RAF in Italy (Source: Wings of Fame 11)

Me-109G-6 formerly of JG 1  (Source: War prizes)

Me-109G-6 formerly of JG 1  (Source: War prizes)

Me-109G-6 formerly of JG 1  (Source: War prizes)

Me-109G-6 formerly of JG 1  (Source: Wings of Fame 11)

Me-109G-10 used by the RAF in Italy (Source: Wings of Fame 11)

Messerschmitt Me-109 G-10 (Source: Koku Fan Me-109 Special)

Me-109G-10  (Source: War prizes)

Me-109G-14 captured at the end of the war. The aircraft appear to wear a Green/Grey RAF camouflage over Yellow undersides with black diagonal stripes  (Source: War prizes)

Me-109G-14   (Source: Wings of Fame 11)