This effect is in Chrome for Mac OS only (I assume Chromium as well - haven't used that on the Mac yet). I noticed it a while back in that version... it's subtl

This effect is in Chrome for Mac OS only (I assume Chromium as well - haven't used that on the Mac yet). I noticed it a while back in that version... it's subtle. You have to be looking at the tab to notice. The effect doesn't appear in either Chrome or Chromium for Linux or Windows.