COLOR GUIDE:
Color Light 1: #f9f5f2
Color Light 2: #d2d6d8
Color Light 3: #ebe9e7
Color Medium 1: #808e97
Color Dark 1: #254960
Color Dark 2: #c15845
Color Dark 3, Headings & Body: #181d22
How to change global colors
Saving colors can be accomplished by setting a default color palette in Divi’s theme options. To set your colors, navigate to Divi > Theme Options > General > Color Pickers Default Palette.

Once colors are saved, they are accessible to you anywhere within the Visual Builder’s color options under the saved tab.

If you don´t want use Michelle Theme Otions, disable and use Divi Variable Manager.
How to change Color Theme Scheme
Navigate to Divi > Michelle Theme Options > Style Settings > Disable Color Options or Enable and change Color as per you choice.

How to change global buttons
Navigate to Appearance > Customize > Buttons > Buttons Styles and Button Hover Styles.

You can change the color of your button text & background, adjust the button font size and style, and even create rounded buttons using the border-radius slider. In addition, you can change the default font and icon used within the buttons.

Need Further Tutorials?
The Divi Color Management: https://l1nq.com/dkjLY
Divi Buttons in Theme Customizer: https://encr.pw/pnSov