In Word, you can give documents a background colour. It means that you change the default white to any other colour, or with a fill effect even. To do this, go to the Page Layout ribbon tab and choose Page Color. From there, you pick the options you want.
However, this method will make all of your pages have that colour settings. If you want to make just one single page in a colour in Word, you are out of luck. Luckily, there is an alternative available. This can be useful to for example give the first page in Word a background colour.
The alternative is to add a square shape and make it the background. Then, for that shape, you give the shape a background colour and extend it to the full page.
Inserting a shape in Word goes like this:
- Go to Insert
- Choose Shapes
- Choose a square to insert. Extend it to the full page and give it its colour properties as you wish.