I'd like to point out that the construction foreman drone does exist by the construction yard to the far north.
Please note, I had Wild Wasteland on, so it may or may not be a result of that. There is a holotape there related to completing the sink. They are gold in color, but otherwise appear to your standard Protectron.
It does exist with wild wastland, there is a foreman and about 3 workers they are yellow like the yellow tape you get around construction sites.
The Foreman that I killed had energy cells, scrap metal... And Lobotomite Goggles. Wild Wasteland trait active.
The Pitt Edit
This guy looks like the protectrons you could activate in The Pitt for Fallout 3. JerichoRCDF 20:39, July 22, 2011 (UTC)