Replace button gradient with flat background color in default.
Replace button gradient with flat background color in default.

The gradient background proved to be a hassle to override in all of the themes that built on top of default. Theme authorship is more manageable if buttons use a flat background color instead. Theme authors can specify a gradient in their themes, if they would like.
City-of-Bloomington/factory-number-one,City-of-Bloomington/factory-number-one