chromium/third_party/blink/web_tests/fast/forms/button-style-color.html

<button>Test Button</button>
<button style="color:red">Test Button</button>
<button style="background-color:green">Test Button</button>
<button style="color:red;background-color:green">Test Button</button>
<input type=button value="Test Button">
<input type=button style="color:red" value="Test Button">
<input type=button style="background-color:green" value="Test Button">
<input type=button style="color:red;background-color:green" value="Test Button">