Anything but happy with my new logo (6)
I believe the answer is:
gloomy
'anything but happy' is the definition.
I can't judge whether this defines the answer.
'my new logo' is the wordplay.
I cannot quite see how this works, but
'my' is present in the answer.
an anagram of 'logo' is 'gloo' which is located in the answer.
No letters remain.
This explanation may well be incorrect...
'with' acts as a link.
Can you help me to learn more?
(Other definitions for gloomy that I've seen before include "Downcast" , "Dreary" , "Depressingly dark" , "'Morose, glum (6)'" , "Dull, miserable" .)