AI Colorization technology is becoming increasingly realistic & accessible.
Here are renditions of a postcard collection produced by Rocky Mt. Photo Co, Denver:
Rodeo postcards from the 1920 Delta County Fair

The full postcard collection is available here, with full archival descriptions & caption:

https://sandbox.aclin.org/hotchkiss/collections/show/1

Originally, the Sherman brickyard was down by the river where the fairgrounds are now.  There once was a lagoon, fountain & grove as seen in these photos.

The colors certainly bring these fruit & vegetable displays to life. But remember – these photos were taken before the Great Depression:

Have fun at the fair folks!