Highlight during presentation - PowerPoint

Question

In previous versions of PowerPoint, when using the highlighter pen to markup slides during presentation, different highlighter colors blended to create a new color. For example if I highlighted something in yellow and then highlighted over the same area in blue, the overlapping area would become green. In the newer versions of PowerPoint, different colors simply overwrite each other. As a math teacher, the old blending of colors was especially useful in teaching certain concepts where overlapping areas are important (e.g. graphing inequalities). Has anyone else noticed this? Is there a fix or something in the works? Thanks.

Answer 1

This appears to be another case of useful capabilities that wither and die. In PowerPoint 2003 and 2007, the highlighter colors remain transparent when they overlap, giving the effect you describe. Starting with PowerPoint 2010, the colors are transparent while you draw, but as soon as you stop they become opaque and the color mix disappears. Since this behavior continues in 2013 and 2016, I doubt that Microsoft is going to change it back.

There's always the good old overhead projector with colored gels, software upgrades don't affect it.

BTW, you might want to delete your other 3 posts on the same subject. Once someone replies, you can't delete them.