Under "Branding" in Assets, you can add your brand's colors and fonts for use in your ad creative.
Adding Brand Colors
Click the "Upload Branding" button in the header, and select "Add Color".
Then you are able to add your branding colors in the Adding Branding Color modal. You can do this using the manual color picker, or by typing in the exact hex code.
Adding Brand Fonts
Click the "Upload Branding" button in the header, and select "Upload Font".
Then select one (or multiple) font files (.ttf or .otf file types are accepted) from your local files on your computer and select upload.
The font files you uploaded will display as font families on the page.
Once you added your own branding assets, they'll be available to use when you're creating ads in Ad Builder.
Using Brand Colors in Your Ad Creative
You can access your colors in the branding section in the left navigation when you're in the Create section building your ads.
Click on the section called "Brand":
Select any graphic assets on your Canvas and click one of the branding colors. That color will be applied to the graphic.
Using Brand Fonts in Your Ad Creative
Select any text asset on your canvas and open the font selector, you will find the customized font you uploaded will be shown as the first option.
Click to apply the font. Here's a quick animation showing this: