Make your slides more powerful using background images. On the Content editor, Add an element to the slide, and choose Background.
A pop up window will show, and offer different options on several tabs.
You can use Photos and Icons as background. Browse among our gallery using keywords, or Upload your own image. Gif animations can also be used as background. A bit of humor never hurts.
When not using a background image, the background color is automatically sorted through the slides according to your color palette. On the Slide Options you can choose a specific Color Set and change the background color.
In order to change these colors, change the color palette or Add your custom one.