You want to know how did look like Europeans when all of them were Sarmatians, in first period after Ice age was finished and when they in slow migrations again repopulated Europe from ice age refugiums on Balkan and Crimea, along river nets?
They had very pale skin, dark eyes from dark to light brown and reddish hair and body hair. In last 5000-7000 years happened sub-racial differentiation and appearance of blond, brown and black hair and, eyes from blue, gray to green.
Modern example preserved in Ireland >Conor McGregor, Irish MMA fighter
Modern example preserved in Serbia >Dragan Djilas, former major of Serbian Capital Belgrade
Have no doubt. This is how original Europeans were look like after Ice age was finished and still this kind of appearance was most usual at time when Greeks and Romans first time appeared in Europe and started to hunt Sarmats (ie Celts, ie Thracians, ie Scythians, ie etc).