Black locomotives have been operating on the Rolla local for the BNSF for the past week or so. Their stripes are white, not yellow, alas because they are FURX ex-NS GP-38-2 types. Here are 3 pictures. Two were taken by my wife on October 8 and 9, 2018 and I took the other October 16, 2018. One could try to imagine the short hoods are high and the stripes are diagonal and yellow (and that 543 is in its original "ATSF warbonnet" scheme).