Conversation so far:
What kind of artist was Paris?
He was somewhat old-fashioned in retaining a roundness in his figures, rather than adopting the thin angularity of most of his artist contemporaries.
Did he do a lot of drawings?
CANNOTANSWER.
Did he influence other artists?
Recent scholarship, notably that of Nigel Morgan, suggests that Paris' influence on other artists of the period has been exaggerated.
Why did he feel that way?
This is likely because so much more is known about him than other English illuminators of the period, who are mostly anonymous.
Did Paris often work alone?
CANNOTANSWER.
What was Paris' art style described as?
His colouring emphasises green and blue, and together with his characteristic layout of a picture in the top half of a page, is relatively distinctive.

Question: What made his work so distinctive?
Self-contained rewrite: Besides Matthew Paris's emphasis on green and blue, what made the art so distinctive?