I'd paint my Yak-3 like this
Because after reading below about Sergiey Luganski, I'd want his Yak-3.

(And the 'Ace's Ornament' they're speaking of, is the oak leaves and 32 on the nose. Why did I say Oil Cooler?

)
On one of the days of May 1944 , Sergiey Luganski and his wingman took off on an important reconnaissance mission. While Viktor Usov accomplished his task of covering his commander, Luganski discovered some German tanks and armoured columns. They flew at low altitude in order to avoid enemy fighters. Having fulfilled their mission, the two Soviets entered their return flight. What they didn't notice was that a 'hidden' pair of Bf 109s followed them. Later, Luganski assumed they must have noticed the rich ace 'ornaments' on his Yakovlev, which made them decide to avoid an open confrontation, and instead seeking the chance in a surprise attack. They waited patiently, and when Luganski, having reduced the speed of his aircraft, started landing - they decided to hit.
The Ground control noticed the danger and warned both pilots by R/T. Viktor Usov turned sharply to defend his leader and soon he had shot the German wingman in flames. But just in that moment, the leader of the German section hit Usov's plane and he was forced to bail out. Now only the two leaders, the Russian and the German, remained in the air. The German pilot turned against Luganski. The Soviet ace was just coming in to land. A small touch down with lowered landing gears probably saved his life. A stream of enemy rounds passed slightly above his plane. While closing his landing gears, Luganski entered combat. Following his first run, the German climbed to make his next attack. He had the advantage - Luganski was flying slowly at deck. The Bf 109 came after him again and opened fire. Several shells slammed into Luganski's Yak. The canopy and instruments panel were damaged, but the plane still was able to fight.
Luganski, noticing the top class of his adversary and aware that his own aircraft was almost out of fuel, realized that he had only one chance of surviving - to use the Yak's superior horizontal. The German pilot, obviously certain of his success, entered a turn fight. After few very sharp rounds, Luganski had the Bf 109 in his gun sight. A fire burst shattered the German’s cockpit hood, injured the pilot and cut the engine power off. The German aircraft slid in the air for a moment, then it made a belly-landing 3 kms from the Soviet airfield. Soviet soldier rushed to capture him and suddenly the hunter had become the prey. Luganski saw this and a few minutes later he landed on nothing but fuel fumes. The duel had lasted no more than 7 minuts long, but it was enough to completely exhaust Luganski. The German pilot was captured: It turned out that his name was Otto. On his killboard were 70 victories, including 30 on Eastern Front. He had just been appointed for the Oak Leaves to his Knight’s Cross. Next day the commander of the 1st Ukrainian Front, Marshal I.S. Koniev arrived at airfield. He inspected the wreck of the German ace’s Bf 109, and decided to award Luganski a second Golden Star, so Luganski received his second Soviet Hero title on 1 July 1944. By that time, his victory score had rosen to 33, achieved during 335 combat sorties.