Twisted version of Noël featured in dark display (4,5)
I believe the answer is:
neon light
'twisted version' is the definition.
I know nothing about this answer so I can't tell whether this works.
'of noel featured in dark display' is the wordplay.
'of' indicates an anagram (the answer comes from or 'of' the letters).
'featured in' is an insertion indicator.
'dark display' becomes 'night' (I can't justify this - if you can you should believe this answer much more).
'noel' is an anagram of 'eonl'.
'eonl' going inside 'night' is 'NEON LIGHT'.
Can you help me to learn more?
(Other definitions for neon light that I've seen before include "Type of illumination" , "Illumination used for advertising" , "Type of fluorescent lamp" , "Advertising sign, perhaps" , "Source of illumination" .)