from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Of the color of dead or dying leaves.
from The Century Dictionary and Cyclopedia
- Of the color of a dead or faded leaf; of a shade of brown. Also foliomort.
- n. A color like that of a dead or faded leaf; filemot.
- n. Same as feuillet, 2.
From French feuille-morte. (Wiktionary)
So to make a countryman understand what feuillemorte colour signifies, it may suffice to tell him, it is the colour of withered leaves falling in autumn.