Beige is definitely a color... It's a light brown. You can even look it up, it has its own code/values in color languages. (CMYK ratios, hex triplet, etc.)

As much as I don't like the idea that yandil is a stalker, smeargle's skin is definitely beige. linoone fur is beige as well (At least the lighter stripes) though i doubt it's fen since they had their own side mission.