Introduction
Gamma allows you to design custom themes to match your brand or personal style.
A custom theme in Gamma defines the overall visual style of your content, including colors, fonts, card styles and 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-dot menu (…) at the bottom right of an existing theme.
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.
To learn more, check out:
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.
The file must be saved as a PowerPoint (pptx.) or Google Drive format.
Upload your file.
Gamma will extract the colors, fonts, and logos from your file to create a matching theme.
How to Customize a Theme
Customizing Colors for Text, Background and Theme Palette
Open the Theme Editor.
Navigate to the Colors tab.
Customize:
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.
Customizing 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
Recent updates allow greater flexibility in logo placement, ensuring professional results.
Open Themes > Logo > Upload.
Upload your logo.
Navigate to Headers and footers under Page setup in your presentation.
Choose the logo placement: top-left, top-right, bottom-left, or bottom-right.
💎 Pro Tip: You can also add your logo using headers and footers (only available for Pro Users).
To learn more, check out:
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: Customize 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.
FAQs & Common Issues
Why can't I import my document to the theme editor?
Ensure that your theme is saved as Powerpoint 'pptx' or as a Google Slide. Gamma does not yet support PDF or doc uploads to the custom theme workspace.
Can I share my custom theme with my team?
Yes! Custom themes are automatically shared across your workspace.
Why doesn’t my logo appear or display correctly in Present mode?
Ensure your theme is applied correctly under Themes > Edit Theme > Logo.
Navigate to Page setup > Headers and footers in your presentation and reselect the logo placement to ensure visibility in Present mode.
Can I import themes from Figma or Canva?
By using Headers and Footers customization, logos can now be placed in any corner of your slides, giving you greater control over presentation aesthetics.
Currently, Gamma supports importing from PowerPoint and Google Drive, but not from Figma or Canva.
Why aren’t my custom fonts displaying correctly?
Check that your font files are correctly uploaded under Themes > Edit Theme > Fonts.