Glad to see someone else making these. Good job.
Reverse Transparent Cursors
These are not invisible! They are reverse transparency. Reverse or inverse transparency shows up exactly the opposite color of whatever you mouse over. These work a lot different than they look and I don't see many others like this on the boards. White and black borders make it easier to see on gray backgrounds. Very useful since you can always see, but fun since they change color as you roll over different colors.