Collocations for humorous - adj.

be
become
find sth

extremely, fairly, very, etc.
gently, mildly, slightly
She has written her description of him in a mildly humorous vein.

unintentionally
blackly, darkly, wryly
The stories range from the darkly humorous to the despairing.

Humorous is used with these nouns:
anecdote, look, moment, poem, tale, tone, touch, verse