This Green Color Texture powerpoint template is a free abstract design with green ribbon as a frame on upper side of background.
This "Light Blue Effects" powerpoint template is a free simple background with lines in a ground that you can use for any professional presentations. You can prepare effective presentations with this background which has all shades of blue.
This "Innovation" powerpoint template is a free background that you can download and use in your powerpoint presentations. This template with abstract color and background has blue ground and nice effects with curves. You can see a lot of white points and pluses on the ground.