Skin, with current, always the first to go blue (8)
I believe the answer is:
indecent
'blue' is the definition.
(I've seen this before)
'skin with current' is the wordplay.
'skin' becomes 'decent' (I can't explain this - if you can you should give a lot more credence to this answer).
'with' means one lot of letters go next to another.
'current' becomes 'in' ('in' can mean current or trendy).
'decent' after 'in' is 'INDECENT'.
'always the first to go' acts as a link.
This may not be right. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for indecent that I've seen before include "not appropriate" , "Indecorous" , "Offensive to common modesty" , "Immodest, gross" , "Offending against modesty, obscene" .)