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<concept id="GUID-A1DBE03F-728E-4F31-BE74-5BDA3906C8DD" xml:lang="en"><title>Themes</title><prolog><metadata><keywords/></metadata></prolog><conbody>
<p>The term <i>theme</i> refers to a set of design elements installed in
a package in a mobile device based on the Symbian platform that determines
the visual appearance of the UI. Themes, also known as <i>skins</i>, only
affect the visual appearance of the UI, the underlying architecture, interaction
style, language settings, and general functionality are not affected.</p>
<fig id="GUID-E0A0BDE6-1863-44E6-8158-B36DD6DD69FD"><title>Personalization through themes</title><image href="GUID-4C859177-7B45-4569-9E27-B207300A7A1C_d0e40663_href.png"/></fig>
<p> The Symbian platform provides an API to allow you to support themes
in your applications. Although a mobile device based on the Symbian platform
can contain several themes, mobile device users can only activate one theme
at a time. When a new theme is activated, the appearance of all applications
that support themes is altered.</p>
<p>The following list contains some of the UI design elements that can
change:</p>
<ul>
<li><p>display background</p></li>
<li><p>color palette</p></li>
<li><p>highlights</p></li>
<li><p>pop-up window appearance</p></li>
<li><p>ring tones</p></li>
<li><p>common component look and feel</p></li>
</ul>
<p>Themes also support SVG-T graphics, which allow them to be scalable.
Themes can contain bitmaps or SVG graphics or a mixture of both. </p>
<p>For more information on the API that enables theme support in applications,
see the <xref format="html" href="specs/guides/Skins_API_Specification/Skins_API_Specification.html" scope="external">Skins
API</xref> documentation.</p>
<p>For information on tools available for creating and modifying themes,
see <xref href="http://www.forum.nokia.com/main/resources/technologies/nokia_themes.html" scope="external">Forum
Nokia</xref>.</p>
</conbody></concept>