Colour I call 'smeared' (5)
I believe the answer is:
lilac
'colour' is the definition.
(I've seen this before)
'i call smeared' is the wordplay.
'smeared' indicates anagramming the letters.
'i'+'call'='icall'
'icall' is an anagram of 'LILAC'.
(Other definitions for lilac that I've seen before include "Flowering tree of the olive family" , "Shrub or small tree with fragrant blossom" , "Shade" , "Lavender-coloured" , "Drop by about one, turning" .)