From the 1970's to the late 1990's the AT&SF adopted a new paint scheme for freight diesels known as the Bluebonnet or Yellowbonnet scheme, which placed more yellow on the locomotives. The purpos... (more)
It is getting harder and harder to find Bluebonnets working in the wild these days. Here BNSF 2854 (GP39-2) was found sitting in the yard in Longmont, Colorado.