You can customize the Header Style as you like. Follow Theme Options > Theme Settings. Here from the Header tab click Header Option and the header style button field will appear.
Custom Header Style: Switch on for custom header style.
Header Bottom Email Text: Set Header Bottom Email Text.
Header Top Background Color: Set Header Top Background Color.
Header Middle Background Color: Set Header Middle Background Color.
Header Bottom Background Color: Set Header Bottom Background Color.
Header Bottom Text Color: Set Header Bottom Text Color.
Sticky Header Background Color: Set Sticky Header Background color.
Header Search Form Button Color: Set the header search form button color.
Header Search Form Button Hover Color: Set the header search form button to hover color.
Header Search Form Button Text Color: Set header search form button text color.
Header Search Form Button Hover Text Color: Set the header search form button to hover text color.
Header Icon Button Color: Set header Icon Button color.
Header Icon Button Text Color: Set header Icon Button Text color.
Header Icon Button Hover Color: Set the header Icon Button Hover color.
Header Icon Button Hover Text Color: Set header Icon Button Hover Text color.
Header Top Language Change Button Color: Set Header Top Language Change Button color.
Header Top Language Change Button Text Color: Set Header Top Language Change Button Text color.
Header Top Language Change Button Hover Color: Set Header Top Language Change Button Hover color.
Header Top Language Change Button Hover Text Color: Set Header Top Language Change Button Hover Text color.
Click Save Changes to save theme options. Click Reset Section to reset only this section. Click Reset All to reset all theme options.