Abe contracts to have John paint Aber's house. Abe is very specific about the colors to be used, which parts of the house will be painted which colors, and the use of Brand Cool paint with a 15-year guarantee. When the painting was nearly done, Abe discovered that John had used Brand Goof paint. At trial, John shows that Abe's colors were used, that the parts of the house were painted with the colors Abe required, and that Brand Goof paint had a 15-year guarantee.

Is this a minor or major breach?