In WordPress Dashboard go to Appearance submenu and click on Customize.
After clicking on customize the theme Customizer page will appear .
Here You have to follow this Path : Go to Customize -> Header -> Header Type
After reaching here select Header Type 2 to get DoctorHub Header.
Then click on Publish.
Please follow this Screenshot for Reference :
In WordPress Dashboard go to Appearance submenu and click on Customize.
After clicking on customize the theme Customizer page will appear .
Here You have to follow this Path : Go to Customize -> Style Configurator -> Theme Color
After reaching here firstly set Color Type as Solid Color and after that Select color code for Primary color as #ff965a and as for the Secondary Color as #007f61
Then click on Publish.
Please follow this Screenshot for Reference :