Change the visual style of your application by modifying mixins. After you make a change, the reusable style patterns that you define in a mixin automatically cascade throughout all elements in the skin that use the mixin, which improves the visual coherence of your interface.
In the navigation pane of Dev Studio, click Records.
Expand the User Interface category, and then click Skin.
Open the skin that you want to edit.
On the Mixins tab, modify the mixin:
Note: If your skin does not use inheritance, the Inherited tab is not available. For more information, see Creating skins. Choices Actions Inherited mixins
On the Inherited tab, click the mixin that you want to edit.
In the settings pane in the middle of the screen, click.
In the settings pane in the middle of the window, define the new mixin format.When you override a mixin, the system moves it from the Inherited tab to the My Mixins tab.
On the My Mixin tab, click the mixin that you want to edit.
In the settings pane in the middle of the window, define the new mixin format.
To change the name and description of a mixin, click, and then provide the new information.