How can I add page background color of pdf using iText in java

I am new to iText pdf library. Can any one guide me how to add background color to entire page (not for chunk or paragraph) using iText pdf in java.

This code will do the job:

Rectangle pageSize = new Rectangle(216, 720);
pageSize.setBackgroundColor(new BaseColor(0xFF, 0xFF, 0xDE));
Document document = new Document(pageSize);