Fractals Lightning with Orange Powerpoint template is a nice abstract background style that has a orange background and light effects.

Business Background powerpoint template is a free abstract design with the abstract solar lights and building images that can be useful for building presentations, reconstruction presentations or urban planning presentations.

This Blooming Powerpoint Theme Template is a nice floral design with violets and love heart images over a blue background that also contains pink flecks on the background.

This free Exclamation Point powerpoint template is a simple abstract business background style with the businessman who is thinking about something on the white background..

This free Subtitle green narrow line ppt template is a nice abstract design that can be used in technological presentations, innovation presentations, but also it can be useful for astronomical presentations.

Sky, Flowers and Butterflies Powerpoint Background is colorful and interesting background design for your powerpoint presentations.