After X-rated complaint, Bluth regularly performing something blue? (7)

I believe the answer is:

stilton

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'something blue?' is the definition.
I can't tell whether this definition defines the answer.

'after x-rated complaint bluth regularly performing' is the wordplay.
'after x-rated complaint' becomes 'sti' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
'performing' becomes 'on' (as in being on stage).
The alternating letters of 'bluth' are 'lt'.
'sti'+'lt'+'on'='STILTON'

Can you help me to learn more?

(Other definitions for stilton that I've seen before include "Dairy product" , "Strong blue cheese" , "Strong English cheese, originally from Leicestershire" , "Blue 4 across" , "Blue 8 across" .)

I've seen this clue in The Independent.

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