Here are some tips you might try:
If available use the Text version of a website. It may offer the best options in terms of flexibility. Because it is provided in plain, unstyled text your browser's default settings will be applied. As a result you can control colour and text size settings or even use your own style-sheet.
You can also select your own text, background, unvisited link, and visited link colours. How you do this will vary depending on the web browser you are using.
Internet Explorer (using version 9+)
- Go to Tools - Internet Options
- The first tab is "General". Select the button at the bottom labelled "Colors...".
- This brings up the colours window; where you can choose a background colour, text colour, visited link colour and unvisited visited link colour.
- Select the best colour choices for your needs from the palette.
- Click OK back out through the windows. From now on, the text web site will use the colours you have chosen.
If the settings in Internet Explorer are not advanced enough, you may benefit from trying out Opera which has some very powerful user settings:
- Advanced control of text, colours and sizing. You can modify the way text, links, headings and form items will appear; using a simple user interface.
- You can set the minimum text size.
- You can turn off the web page's stylesheets; and then optionally override it with your own or one of several styles provided.
- Zoom tool which zooms the entire page, not just the text.
- Mouse gestures to control common actions - no need to click small buttons.
- Control of pop-up windows - you can prevent all pop-ups, or allow "user requested" pop ups.
Opera is available for free