If there is no colour style specified, your browser is displaying text and background in its default colours. This will look different on different computers. One advantage of Cascading Style Sheets is that you can set the colours in which a web page is displayed, and all browsers will display the page in the colours you selected.
You can read more about style rules, and how to set up styles here.
You would ordinarily save the styles in a separate file so that others cannot change your styles, and styles are available for your entire site. This page is designed to show you how styles work, and the CSS used to style page background colours and text.
Select a background colour and a text colour from the lists, and click change to see how you can use Cascading Style Sheets to control your web page colours.
You can change the appearance of your web pages by styling most the HTML tags on your pages. Use this page to experiment with styling background and text colours by changing the body tag style:
This is a paragraph of text. Only a small one, but a paragraph nonetheless.
This is a paragraph containing an
image with some explanation of the picture's content and a caption.
Light and shadow in the Carina Nebula
(From http://spaceplace.nasa.gov/en/educators/images/stars/hst_carina_L.jpg).
Here is a link to a test page. Use the back button to return to this page and see the different link colours.
This is a list of nothing in particular: