Vertical scrolling causes the colour of whatever is on the screen to
change and the colour returns to the original as soon as scrolling
stops. For example, in the case of text, the colour changes from black
to blue and back to black. I would like to troubleshoot and, if
possible, cure this phenomenon. Google has not been particularly helpful
and I would be grateful for any positive ideas and things to do. Thanks
in advance.
Norman
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