1. Nice find! This is happening because you have a color set for H2s in the Customizer. I’ll get that fixed in the next version.
For now, open the “Text” tab and add the color directly to the H2:
<h2 style="color:#FFFFFF;">Your title</h2>
For the footer background, you can use the Colors add-on. Go to “Customize > Color > Footer Widget Colors” and remove the color value from the background option.