### Clue: One who reprimands Mark goes very pale (9)
### Answer: ALABASTER 
 ### Explanation: Definition: very pale
 A(article for one in number) + "lambaster"(a reprimander/a berater) **minus**(… goes) "m"(abbrev. for "mark").
Defn: …, like the whiteness of alabaster, as in "an alabaster complexion".