buff-yellow

In colour it is far from being equal to a good compound of Prussian blue and gamboge, and it assumes a dirty buff-yellow on exposure to light and air, the film of blue on the oxalate more or less disappearing.

Field's Chromatography or Treatise on Colours and Pigments as Used by Artists George Field

This mark is of a semi-lunar shape, and whitish; but the colour of the muzzle is buff-yellow.

Quadrupeds, What They Are and Where Found A Book of Zoology for Boys Mayne Reid 1850

The choice of color does communicate a sense of sparseness in the hieights though, however, in the Snake River Basin, which is a buff-yellow near the river itself, the grasslands frequently go to green where there is much irrigation.

The ZehnKatzen Times 2009