PenciDesign Supporter replied
Hi,
1. About the header color, please follow these steps:
Go to dashboard → Header Builder: select your current header then click the "Edit with Penci Header Builder button".
Select each row then change the background color on the left side like the screenshot below:

2. Select the "Hamburger Menu" elements then change the background of the left side similar to #1,
3. Go to "Appearance → Customize → Vertical Navigation & Menu Hamburger → General" to adjust the sidebar hamburger.
4. You should take a little time to read more about the Header Builder video document here: https://soledad.pencidesign.net/soledad-document/#header-footer-builder
Regards,
PenciDesign.