Why is this called the Scrovegni Chapel?

Enrico Scrovegni, a banker, was the man who built the chapel and commissioned Giotto to paint it$.$ Bankers, especially the ones who charged high rates of interest for lending money, weren't any more popular in the $1300$ s than they are today. Enrico's father, also a banker, was so disliked that the poet Dante depicted him in hell in his famous work titled the Inferno. The Scrovegni Chapel also has a fresco of heaven and hell in which Enrico Scrovegni can be found being admitted into heaven.

SHORT$-$ANSWER QUESTION

Why is the blue sky remarkable for a painting made at this time?

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