I am getting this odd rainbow effect on text on some (but not all slides). I only see it in preview and published form, not in PPT. I have tried to rebuild the slide from scratch a few times and keep getting the same thing each time. Tried to remove the animations, give it a white background, change the font color, change the linespacing, etc. Thought about moving the text to an image, but that's not good for future editing and just seems wrong.