# Blender 3D: Noob to Pro/Customization

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## Changing the Theme

Like many other programs with a graphical user interface, Blender allows
you to customize or modify many aspects of its appearance. A collection
of such customizations is called a **theme**.

Theme controls are found in the User Preferences window. Click **LMB**
on the \"Themes\" button to activate a drop-down menu which can be used
to select different themes. Below this is an \"Add\" button that can be
used to create new themes. If any themes have been added, a \"Delete\"
button will appear, along with other controls to adjust the current
theme.

This book presents screen shots using the default theme. If you are new
to Blender, you should continue using the default theme as you progress
through the book, to avoid confusion.

