Edward Ardizzone has the most lovely and whimsical style of illustrating which add so much to his books.
Sarah and Simon's father is a poor painter who can't seem to sell his masterpieces. Their mother stays home with the crying baby and valiantly puts food on the table despite the lack of money.
Saran and Simon's father lack just one thing to finish the masterpiece that will make them rich- red paint.
It ends happily-ever-after which is what a children's book is all about.