I hope you are well today and thank you for your question.
I have moved your topic over Sparkling forum. You should not get spammed for posting on the Sparkling forum but if you are getting continuously then please let us know so that we can troubleshoot the issue and fix it for you.
You can change the color of your Sparkling theme nav/menu bar same as Dazzling theme by adding the following CSS code in the Custom CSS option of your theme on the below path.
Admin Area -> Apperance -> Theme Options -> Other -> Custom CSS