In a sign of spring, little colored flags are popping up along with surveyors and their equipment. Here's what each color means.

Long-Lost Fragment of First Rainbow Pride Flag Resurfaces After Four Decades The brilliantly colored banner—now on view in San Francisco—flew on “Gay Freedom Day” in 1978 ...

And 56-year-old Luis Garcia has strung up two flags: one white and one red. Unable to work as a security officer, his cupboards are bare and he cannot afford his diabetes medication.

The red flags indicate electric work. And some of the red ones around Heather Gardens warn: "Hand dig 18" either side of markings to depth of excavation to expose & verify precise location." ...

The iconic, multi-colored banner was first made 43 years ago by artist Gilbert Baker. It's since ended up in different places across the country, but now is officially on display in San Francisco.

And they mark those utility lines with bright colored flags. Flags that caught Nathan’s eye. “Nathan has been fixated on flags for probably two years,” said his mother, Lisa.