Changes to Custom Cursors not showing when Cursor is applied

Hi Folks,

So I downloaded some Cursors which were yellow, I used the Cursor Editor and changed them to blue, I applied them to my system but decided they were too light so I made them darker blue in the Cursor Editor.

When I select each one in 'Mouse Properties' they show as the darker blue version but the previous lighter blue versions are what are actually displayed and used after clicking 'Apply'.

I've tried removing the folder I put in C:Windows/Cursors, removing the cursors from this folder, renaming the cursors then putting everything back again but the light blue versions still persist after I click 'Apply' despite the darker versions showing in mouse properties.

Has anyone else had this sort of problem? Does anyone know how I would fix the issue?

Any help will be greatly appreciated.