Umeed word press theme comes up with complete header settings where you can manage following settings from
Theme Options >> General Settings >> Header: Logo upload and dimensions of logo margin from top and bottom, Favicon file type .ico you can upload here. Topbar enable disable switch topbar left right text fields and donation page settings available here. Also you can set the donation button icon by enter the font awesome icon class there and then you can switch the donation button On/Off from there easily.
It also provides you with additional options which will let you control everything related to Donation Button’s styling.