Yes, my dad is Lithuanian and has blonde hair and blue eyes. Lithuanians are not a Slavic people. Neither are the original Estonians or Latvians. However, there has been a significant amount of mixture with the neighboring Russians in those nations, so many are now partially Slavic, especially in Latvia. I used the term Teutonic to contrast the Lithuanians from the Slavic people. I suppose I could've used the term "Nordic." Nordic is often used to describe Germans and Scandinavians. Below is an explanation of why the term Teuton is associated with Germanic like peoples:
The Teutons or Teutones (from Proto-Germanic *Þeudanōs) were mentioned as a Germanic tribe in early historical writings by Greek and Roman authors such as Strabo and Velleius. According to Ptolemy's map, they lived on Jutland, whereas Pomponius Mela placed them in Scandinavia (Codanonia)[1]. German historians did not associate the name Teutons with their Proto-Germanic ancestors until the 13th century.
More than 100 years Before Christ many of the Teutones, as well as the Cimbri, migrated south and west to the Danube valley, where they encountered the expanding Roman Empire.
During the late 2nd century BC, the Teutons are recorded as marching south through Gaul along with their neighbors, the Cimbri, and attacking Roman Italy. After several victories for the invading armies, the Cimbri and Teutones were then defeated by Marius in 102 BC at the Battle of Aquae Sextiae (near present-day Aix-en-Provence). Their King, Teutobod, was taken in irons.
The captured women committed mass suicide, which passed into Roman legends of Germanic heroism (cf Jerome, letter cxxiii.8, 409 AD [2]):
By the conditions of the surrender three hundred of their married women were to be handed over to the Romans. When the Teuton matrons heard of this stipulation they first begged the consul that they might be set apart to minister in the temples of Ceres and Venus; and then when they failed to obtain their request and were removed by the lictors, they slew their little children and next morning were all found dead in each other's arms having strangled themselves in the night.
The terms "Teuton" and "Teutonic" have sometimes been used in reference to all of the Germanic peoples. The Latin name Teutōnī was borrowed via a Celtic language from Proto-Germanic *Þeudanōs (meaning "they of the tribe"), the word *þeudā being a Proto-Germanic name for "tribe". The words can be further reconstructed as an earlier name *Teut-onōs and the root *Teutā, which is a western Proto-Indo-European word root meaning "people".
The word *þeudā is found not only in German deutsch (=German, from *þeudiskaz), Old English þēod, Gothic þiuda and Old Norse þjóð "people", but also in the Old Irish word for "people," tuath.