Halfway down an alley behind Chinatown was a door that someone had painted red.

The walk along the Charco Verde Nature Trail passed many colorful objects and natural flora. Here was a bush whose leaves were a uniformly red color.

One of the booths of the Aloha Festival on the Presidio Grounds displayed fabric prints and wrap-skirts. Here was one sample with a red sea turtle on red cloth.

Fog obscured the fireworks that night. Here a red display lit the sky from behind.

An old brick wall in an alley of downtown Sacramento had been partly painted red.

An old steam train had an unusual connector on its back. The red socket appeared to require a pin to be pulled and replaced to attach a car.

Restored old rail cars were on display in the California Railroad Museum. One was an old sleeper car. Here its red curtains were softly lit from outside.

Normally, one does not consider Los Angeles as a symbol of autumn. But that day, a red fall tree displayed its leaves.

A lone pigeon guarded the red back door of a restaurant in Chinatown.

A red purse with tiny black polka dots was on display in a shop window of Upper Grant Street.

A red lantern hung in a shop window of Chinatown was painted with a dragon design.

The side wall of one of the venues at the 2015 Burning Man Decompression was painted to look like wood. Once in the past, a sign had been affixed to this wall, but now all that remained were eight empty screw holes.

Autumn came to San Francisco and most trees remained green. One tree on Bryant Street put on a lonely display of fall colors.

At the corner of Harrison at Steuart Street stood a red fire alarm on the sidewalk's corner. This particular fire alarm casing was cast in 1941.

Sees Candy store was located in the Embarcadero Center. Across from it, red plastic blocked the interior view of a new store. This is that Sees Candy store reflected in that red plastic.

There were many fine shops in the Embarcadero Center. One such shop displayed a red leather purse.

A red parking meter still showed time remaining for the red car parked in its parking space.

A series of posts were set into the edge of the sidewalk to prevent cars from parking on that sidewalk. The top of each post was painted red. This was the wounded top of one such post.

Red painted bricks had a black steel gas line run vertically up its surface.

At 4th and Bryant was a small bar and cafe. At one time its lattice had been stained a bright red, but over time that lattice has faded.

In a restaurant window in downtown San Francisco, many wine glasses were hung upside down on a bright red wine glass holder.

In the kitchen of the Roberts's home in Pleasant Hill, Uncle Mason sliced cheese for part of Christmas dinner.

A dribble of silver paint was found on the red metal of an old 55 gallon drum.