SEE FIRST:
• Getting Started With Custom Styles
☛ To get started on customizing your website's 'Site Background Area', click on Design Themes.
☛ Click the Custom Styles tab (last one) to customize colors, fonts, backgrounds and more.
This would customize your blog's menu heading text that appears along the side navigation.
☛ Under Blog Menu Headings, you can change either or both the text color and text color background. Select a color from the color wheel that appears after you click within the hexadecimal box. Move the larger dot from around the loop and then the smaller dot to refine it further. If you have a HEX color code from an image file, enter that in this field preceded by #.
☛ Click Save Changes button to commit any changes.