Add Audi

[janwyl1]

• [x] Brand Name: Audi
• [x] Brand Colors: #FFFFFF, #000000, #F50537
• [x] Brand URL: https://www.audi.com/ci/en/intro/brand-appearance.html
• [x] Where/how you found the brand colors: Brand Appearance > Basic > Colours

[FancyThemes]

Added.