The sort of colour that's beyond the Spanish (6)
I believe the answer is:
pastel
'the sort of colour' is the definition.
'beyond the spanish' is the wordplay.
'beyond' becomes 'past' (I've seen this before).
'the spanish' becomes 'el'.
'past'+'el'='PASTEL'
'that's' acts as a link.
(Other definitions for pastel that I've seen before include "pigments mixed with gum" , "art work" , "Crayon - gentle shade of colour" , "Type of crayon" , "Outmoded" .)