ash-colored vs sad

Of the color of ashes; pale grey. 

Of colours: dark, deep; later, sombre, dull. 

Soggy (to refer to pastries). 

Causing sorrow; lamentable. 

Appearing sorrowful. 

Feeling sorrow; sorrowful, mournful. 

Poor in quality, bad; shameful, deplorable; later, regrettable, poor. 

Unfashionable; socially inadequate or undesirable.