Blue eyes are not a sign of European ancestry.
Check this post,there are Altaian Khazakhs that also have blue eyes and their paternal lines are having very few European lines.
http://www.eupedia.com/forum/threads/29418-Blue-eyes-in-Altaian-Kazakhs
So even if Genghis Khan was blue eyed and half turk,what does it matter?
He was a savage which troops killed civilians.
http://en.wikipedia.org/wiki/Genghis_Khan
"He came to power by uniting many of the
nomadic tribes of northeast Asia. After founding the Mongol Empire and being proclaimed "Genghis Khan," he started the
Mongol invasions that resulted in the conquest of most of Eurasia. These included raids or invasions of the
Kara-Khitan Khanate,
Caucasus,
Khwarezmid Empire,
Western Xia and
Jin dynasties. These campaigns were often accompanied by wholesale massacres of the civilian populations – especially in the
Khwarezmian controlled lands. By the end of his life, the Mongol Empire occupied a substantial portion of Central Asia and China."
EDIT:
I think most Europeans are brown eyed and most Turkic speaking people are also brown eyed.
However,this does not make Turkic people Europeans,neither Europeans Turkic.
There are some very easy to spot traits that separate Europeans from Mongoloid Turks,one of them being the presence of Epicanthic fold at Turkic people and the fact Europeans do not have it.
http://en.wikipedia.org/wiki/Epicanthic_fold
If some people from Finland,but very few,got Epicanthic folds,that is from mixing with Siberians.
And sure there another traits,like Turkic people are much lower at tallness and so on.
So I do not understand what are you trying to say in this thread,cause to me is just a non-interesting pure non-sense.
From my point of view Genghis Khan might have been even light blonde with blue eyes,he was still an idiot unhuman person,not matter the color of his eyes and hair.