Colour's quality can be seen in this architectural material (9)
I believe the answer is:
limestone
'material' is the definition.
(limestone is a kind of material)
'colour's quality' is the wordplay.
'colour's' becomes 'limes' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'quality' becomes 'tone' (synonyms).
'limes'+'tone'='LIMESTONE'
'can be seen in this architectural' is the 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 limestone that I've seen before include "building material" , "Rock of calcium carbonate" , "Mineral" , "Hard calcium rock" , "Rock, basis for caves and pavements" .)