I agree...they definately have Ainu genes but, I'm not sure if there is a relationship between the Tocharians and the Ainu/Jomon of Japan.
There are Chinese poems lamenting the green eyes of some of the Han emperors and the 'magic men' of the emperors were documented in Chinese literature to have had red hair.
I don't think Ainus and Tocharians are related. I am sure they mixed though. Ainu and Tocharian language are very different. Ainu is a language isolate like Basque. I have read Ainu could be related Austranesian (Polynesian languages like Tagalog, Malay, and Javanese) or Austrasiatic (eg. Vietnamese, Khmer, Munda, etc) language family. Another theory is Ainu could be related to Burushaski and Basque.