The most common and most likely answer to this crossword clue is the 5 letter word TAINT
T
A
I
N
T
More clues leading to the result TAINT
- Hint of disgrace? It's not said commonly?
- Contamination — it is not very common
- It isn’t commonly a stain or blemish
- At home wearing shoddy stuff - a flaw
- Foul rubbish gathering at home
- 'T isn't corrupt
- Colour to conceal a blemish
- Corruption in Britain today
- Corrupt document finally isn’t
- Explosive pervaded by a current contamination
Buddy explains!

The straight part
We know that "Nasty colour" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case nasty colour = taint.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does TAINT mean?
TAINT noun- A contamination, decay or putrefaction, especially in food
- A mark of disgrace, especially on one's character; blemish
- Tincture; hue; colour
- Infection; corruption; deprivation
- A marker indicating that a variable is unsafe and should be subjected to additional security checks.
- To contaminate or corrupt (something) with an external agent, either physically or morally.
- To spoil (food) by contamination.
- To be infected or corrupted; to be touched by something corrupting.
- To be affected with incipient putrefaction.
- To mark (a variable) as unsafe, so that operations involving it are subject to additional security checks.
- To invalidate (a share capital account) by transferring profits into it.
- A thrust with a lance, which fails of its intended effect.
- An injury done to a lance in an encounter, without its being broken; also, a breaking of a lance in an encounter in a dishonorable or unscientific manner.
- To damage, as a lance, without breaking it; also, to break, as a lance, but usually in an unknightly or unscientific manner.
- To hit or touch lightly, in tilting.
- To thrust ineffectually with a lance.
- The perineum.