To define solid colors, Follow the below steps.
Step: 1 => Open the ShagunBox app and choose the Color Swatch app from the side menu.
Step: 2 => From the Select Swatch Type select box, Select solid color swatch.
Step: 3 => Now click on Define Solid Colors button.
Step: 4 => Your store colors list will be opened (See screenshot below).
Step: 5 => Now Click on Edit button to select color.
Step: 6 => If the color has two values like Dark Gray then, Select Two Color from the select box and define colors (See screenshot below).
Step: 7 => Click on Save Color button.