Compose or edit existing mov or mp4 video

We need help to edit our existing video file to white background color and purple color mad style. Please make sure the video file format convert to mp4 and we need this video file can be displayed on website, iphone and android phone. We got this type of video file around 100+ files. Each one needs to be edited and converted as my attached [login to view URL] file style. Please also make the video size reasonable. We need you provide us sample with our attached [login to view URL] before we can award the project to you.