As others already said, Chromium definitely isn’t the first or only one to use a blue logo. There is a theory that colours influence the way we perceive a brand, for example this article explains that idea.

Blue is supposed to convey trustworthiness and maturity. A lot of companies like that, so you tend to see a lot of blue.

You may also be experiencing the frequency illusion. If you specifically noticed the blue in Chromium’s logo, it would make sense that you suddenly started noticing the blue in other logos as well!