Changing the Theme Colors
All themes include the option to change the colors of some of the elements within the theme.
Go to Appearance > Customize > Colors to change the colors, if desired.
Click Select Color to reveal the color picker and choose a new color for each available setting.
Some themes include transparency controls which allow you to control the opacity of the custom color. This is located below the color picker. See screenshot below:
Be sure to click the Save & Publish button at the top of the Customizer to preserve your changes.