Changing Background Color
To change the background color :
Click the block you'd like to edit, then select Background from the left side panel.
Click the background color paint bucket icon, or click the hex code to enter or paste an HTML hex code color.
Change the color by choosing a default color, or, click the + sign under Recent Colors to choose a different gradient or color.Move the white circle or click the color wheel to select a gradient, or choose a completely different color using the color slider below. After choosing the color, click anywhere outside the color picker tool to set the color!
You can then experiment with fun textures and patterns by adding a Background Image overlay to the block, playing with the opacity