#1. Determine your Blog Page layout
Edit BLog Page > Edit Section

At Layout, your Blog page layout will be shown
In my example, the Blog page layout is Single Column

#2. Click on the Site Styles icon in the top right of the Header

#3. Choose COLORS

#4. Click on the Theme Color that the Blog Page is using
Follow this post to know what Theme Color a page is using.

#5. Scroll down to BLOG-SINGLE COLUMN – Post Title, and click on this option

#6. Click Custom then change to the color you want
