browser.storage.local.get( [ 'bgcolor', 'textcolor', 'messages' ] ).then( function ( r ) {
	var  m = r.messages.split( '\n' );
	m = m[ Math.floor( Math.random() * m.length ) ];

	document.querySelector( 'h1' ).textContent = m;
	document.body.style.backgroundColor = r.bgcolor;
	document.body.style.color = r.textcolor;
	console.log( r );
} );

@@ -104,16 +104,38 @@
 messages
+ %7C%7C 'Breathe';%0A%0A%09m = m
 .split( 
@@ -290,16 +290,26 @@
 .bgcolor
+ %7C%7C '#fff'
 ;%0A%09docum
@@ -342,16 +342,29 @@
 extcolor
+ %7C%7C '#b3b3b3'
 ;%0A%09conso

Load sane settings if there are none