Hi,
You can disable CSS but you can't auto convert the contents from color to black white. If you want to disable CSS you can just set your CSS block's visible to false. For example:
Code: HTML/ASPX
<style runat="server" id="styleSheet1">
....your css...
</style>
To disable the above CSS block, you can simply do:
Code: C#
styleSheet1.Visible = false;
The basic rule is you do whatever you do
as if you were just displaying the page to the screen. So if this is what you do to disable CSS on screen, then this is what you do to disable CSS in the PDF. Obviously there are other possible ways to disable CSS in a web page, but they have nothing to do with the PDF converter at all.
Thanks!