Introduction

Gamma allows you to design custom themes to match your brand or personal style. You can modify colors, fonts, logos, and other design elements to create a unique visual identity for your workspace. Follow the steps below to create, import, or edit a custom theme in Gamma.

What is a Custom Theme?

A custom theme in Gamma defines the overall visual style of your content, including:

Colors
Fonts
Card styles
Accent images

Note: Custom themes are automatically shared with all users in your workspace.

How to Create a Custom Theme

You have two ways to create a custom theme in Gamma:

Option 1: Edit an Existing Theme

Click on the three dots (…) at the bottom right of an existing theme.
Select Customize this theme to modify colors, fonts, logos, and more.

Option 2: Create a New Theme from Scratch

Navigate to Themes.
Click New Theme.
Follow the step-by-step builder to customize your:
- Background and primary colors
- Fonts and typography
- Design elements (buttons, links, and shadows)
- Logos and accent images
Save your theme to use it across your workspace.

How to Import a Theme

Gamma allows you to import themes from external sources like PowerPoint or Google Drive.

Steps to Import a Theme:

In the Theme Editor, click Import Theme.
Select PowerPoint or Google Drive.
Upload your file.
Gamma will extract the colors, fonts, and logos from your file to create a matching theme.

How to Edit an Existing Theme

Click on the three dots (…) next to the theme name.
Select Customize Theme.
Adjust the following elements:
- Colors: Modify the color palette for backgrounds, links, and buttons.
- Fonts: Change the typography, including font styles and sizes.
- Logos: Upload a logo to appear on all decks using this theme.
- Design: Adjust card shapes, strokes, and shadows.
- Images: Set default accent images and define AI-generated image styles.

How to Customize Colors in a Theme

Open the Theme Editor.
Navigate to the Colors tab.
Customise:
- Background colors
- Button and link colors
- Element fills and outlines
Enter a Hex Code or use the color wheel to select colors.

Customizing Font Colors:

Click on Fonts in the Theme Editor.
Adjust heading and body text colors.
Apply gradients for a unique text style.

Typography & Font Settings

Gamma allows more control over typography in custom themes. You can adjust:

Line height
Letter spacing
Base size
Uppercasing (for headings only)

How to Add a Logo to Your Theme

Open Themes > Edit Theme > Logo.
Upload your logo.
The logo will automatically appear in the bottom-left corner of all decks using this theme.

Customizing the Design

You can adapt the design of cards, blocks, content, buttons, and links:

Roundness: Adjust how sharp or rounded elements appear.
Stroke and Shadow: Add outlines or hard shadows to content.
Block Colors and Fills: Customise the colors of smart layouts and interactive elements.

How to Set a Consistent Image Style

Open the Theme Editor.
Navigate to Images.
Add specific keywords for AI-generated images to maintain a consistent style.
Upload accent images to apply them to your custom theme.