Update October 13: DSB confirmed green paint found at left wing is from BUK missile
Jeroen Akkermans, a Dutch reporter for RTL Nieuws visited the MH17 crash site several times. He visited the area in July 2014 and took many photos. All of his photos taken during multiple visits to the crash site can be seen here!
Akkermans found out that between July 2014 and November 2014 someone removed green paint from the left wing of MH17.
One of the photos he made in July 2014 was of damage on the upper part of the left wing tip. Some green patches of paint can clearly be seen on photos Akkermans published. This is a different colour of green than the primer paint being used by Boeing. The photos below show this non native paint. (orginal photo in large resolution here)
Four weeks after the first visit of Akkermans the wing was all of a sudden turned upside down.
In November 2014 Akkermans again made photos of the same damage at the same location of the wing. Clearly can be seen that the patches of green paint are almost gone!
The colour of the paint is very similar to green used on BUK missiles as can be seen in the picture below.
The item Jeroen Akkermans made for RTL Nieuws was broadcast October 10 2015 and can be seen below. Some other interesting facts are presented as well.