Most PowerPoint templates are designed for standard bullet point presentations. They’re not really designed for elearning courses.
… Which hasn’t stopped folks I know from using those bullet-point-intended templates … and it seems to me that they’ll find the gaudiest color scheme or the blandest – no middle ground … and because PowerPoint is intended to be used with bullet points … well … that’s what you get onscreen … the wall of text (that is usually accompanied by audio reading all of that text for you – how thoughtful).
The article is well worth reading … the gist being that you shouldn’t use a PowerPoint template alone because it is not designed for eLearning … so, you create a template for yourself – he shows you how.
And gives some good pointers.
Focus on white space
Make a few variations of the template
Find layout and color scheme ideas from other sources
Use graphics tools to help you build your templates