How to set Button color?

I am using CSS in a theme to set my button styles.

I can set a button style with background-color: blue;, but that just colors the four exposed corners.

I can font-style: italic; and set the font.

color: red; doesn’t seem to do anything.

How to I use CSS to do a red button?

Is there another way?

One way.

Use a Label. Set its style: background-color: aqua; border-radius: 5px; -moz-border-radius: 5px;

But it has no color gradient.

The Button component in the reindeer theme is not easy to theme - it is (theme-wise) surprisingly complex for all its apparent simplicity, and uses bitmaps etc. The NativeButton component is much easier to customize.

One option would be using a different base theme such as
Chameleon
or runo.