How can I change all elements of one color in a presentation to another color. I have 150 slides with 100's of elements not part of the template, on the slides. i.e. Search for a Hex Color and replace with another Hex color?

How can I change all elements of one color in a presentation to another color. I have 150 slides with 100's of elements not part of the template, on the slides. i.e. Search for a Hex Color and replace with another Hex color?

On one slide alone, there are 75 separate elements to be changed.

Some sort of Global search and replace inside the file?

Thanks

Dan