How do I make the background black when a switch is flipped?

Hi @russian-dima @alphaandtem

You can change the colour of the whole page itself by →

$w('Document').background.src = "wix:image://v1/68d3a9_1de7529c444b4c9eb38401f8efe0cad2.jpg/flowers.jpg#originWidth=1970&originHeight=1120"

(Tip - You don’t have to include # inside the $w(‘Document’) )

You can change the background of a strip by →

$w('#strip1').background.src = "wix:image://v1/68d3a9_1de7529c444b4c9eb38401f8efe0cad2.jpg/flowers.jpg#originWidth=1970&originHeight=1120";