I’ve been looking at some plugins that do what I need, and the code looks cool (I may try integrating it into my child theme), but this functionality seems like it should be native to a basic WordPress installation.
That’s what I figured – thanks for the confirmation and all the help!
That worked perfectly! Thank you!
One final question, since my php skills are limited, does the line:
add_action('after_setup_theme','child_default_background_color');
only apply to the function immediately following it, or to all code after the line? Currently, I have this code at the end of the functions.php file, but I would like to move it to the top if possible.