Are you using the default Microsoft mouse cursor set? Microsoft cursors have white borders even for black cursor sets. I guess this is to prevent the problems such as this one.
My recommendation is using a different cursor set.
Friday, October 12, 2007 12:04 PM - bandw
Re: Re: How can I change the color of mouse pointer?
Change the select text's cursor to C:\WINDOWS\Cursors\beam_r.cur
it looks well. Thanks
Saturday, April 23, 2016 10:38 AM - Zhi Wang
Re: How can I change the color of mouse pointer?
You can use the "Windows Black" cursor scheme that is included in the default installation and works with any background.
For Win7 OS, you can do this,Start->Control Panel->Hardware and voice->devices and printer->mouse，then you will look a dialog, click sencond tab "Pointer", choose "Windows Black" for schema through dropmenu.