Specify color schemes with a CSS class name, which of course also lets you choose different background images, different border colors, and more.

Here’s how you can define your color schemes in liferay-look-and-feel.xml:

<theme id="deep-blue" name="Deep Blue">
    <settings>
        <setting key="my-setting" value="my-value" />
    </settings>
    <color-scheme id="01" name="Day">
        <css-class>day</css-class>
        <color-scheme-images-path>
            ${images-path}/color_schemes/${css-class}
        </color-scheme-images-path>
    </color-scheme>
    <color-scheme id="02" name="Night">
        <css-class>night</css-class>
    </color-scheme>
</theme>

In your _diffs/css folder, create a color_schemes folder and place a .css file in it for each color scheme. In the case above, we can have either one file called night.css, letting the default styling handle the first color scheme, or we can use both day.css and night.css to specify each scheme. Let’s use the latter option here, creating both files to define our color schemes.

Place the following lines at the bottom of your custom.css file:

@import url(color_schemes/day.css);
@import url(color_schemes/night.css);

The color scheme CSS class is placed on the <body> element, so you can use it to identify your styling. In day.css, prefix all your CSS styles like this:

body.day { background-color: #ddf; }
.day a { color: #66a; }

In night.css, prefix all your CSS styles like this:

body.night { background-color: #447; color: #777; }
.night a { color: #bbd; }

You can create separate thumbnail images for your color schemes. The <color-scheme-images-path> element tells Liferay where to look for these images (you only have to place this element in one color scheme for it to affect both). For our example, create the folders _diffs/images/color_schemes/day and _diffs/images/color_schemes/night. In each folder place a thumbnail.png and screenshot.png file, according to the specifications defined in the Thumbnails section above.

Let’s review the predefined settings available for your theme.

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