Thinking that all groups of
white people (Europeans) colonized everything is ignorance, and it spreads like wildfire. You don't hear about many Russian or Polish colonies outside Europe/Eurasia. You don't hear about many parts of the world colonized by
Eastern European groups. The Greeks also don't do much colonizing in recent history, so it's mainly been about 7 or 8 groups of Europeans (the Vikings did land in North America a thousand years ago) in recent history that did most of the colonizing worldwide (English, Dutch, German, French, Belgian, Spanish, Portugeuse, and Italian). Those 7 or 8 groups have had a lot of the influence in Europe, so people in other parts of the world wouldn't have any more time to differentiate between an Italian and a Bosnian than someone in Europe would have time to differentiate between a Tanzanian and a South African, thus theres a lot of
assumptions and ignorance based on what people look like.
Not even every family in every country that did colonize other parts of the world was involved in colonization. There were people/families in England, France, Spain, Portugal, Italy,
the Netherlands, Germany, and Belgium that didn't have the time
on the money to go out and explore the world, look for gold, or enslave other groups. They were
going to work for the same kinds of people that were colonizing other parts of the world.