The colors in the following image shows you the colors you can define for your theme. You can use the Firefox Color extension to preview your creation. Valid values for alpha range between 0 and 1 and the default value is 1.0 or completely opaque.

The RGB (red, green, blue) component of the color can range from 0 to 255, while the 'a' in RGBA stands for alpha and controls the opacity of the color. Once the color input field loses focus, the color format will be converted to rgba when the input field loses focus. The largest block represents the intensity of the color, the rainbow slider to its right allows you to select the hue, and the rightmost slider defines the opacity of the color. The color you select will be displayed in the example below the color settings so you can play with colors until you find just the right combination for your theme. You can also use the color selector to pick the colors for your theme: In the example above, the image fades into a solid color, keeping the image size down.Ĭolor values can be entered using hex, rgb, or rgba.

The image will be aligned to the right end of the header.

The format can be one of: PNG, JPG, APNG, SVG or GIF (Do not use animated gifs.).

When picking an image for the theme's header, it should be: To use the AMO theme generator, fill out the form with information for your new theme.

Take a look at the Static themes article to get started. You can create a more elaborate theme, for example a theme that uses multiple images, by coding a static theme. Removing your extension from distribution.Will I ever be able to sell through AMO?.Use plain language in any privacy policy or license agreement.Select the right platforms and versions.

The add-on description can be longer, but not too long.

Focus on key features in your screenshots.

Make sure your summary is just long enough.

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