KeynoteUser (http://www.keynoteuser.com) has released Elemental, a Keynote theme based on the four elements in nature. Keynote is the presentation component of Apple’s US$79 iWorks bundle.

Elemental sports brightly colored, gradient backed themes (plus a fifth, alternate bonus color) in all the standard presentation sizes (including HD). It costs US$29.95.

However, for a limited time, you can save 20% off anything in the KeynoteUser store by using the code keynote20 at checkout. This offer expires on Aug. 6. Keynoteuser is also giving away a free Keynote theme. Elemental Earth2, an alternate brown version of the Elemental theme.