change background of photos 253 photos

This is a project to change the background of 253 photos. I recently paid a freelancer to edit the photos however he was unable to edit the background because he had to go to school. Yes I awarded him the previous project because he is in school. Anyways this project you will need to submit a sample of an edited photo i upload all u need to do is change the background. Background color can be any color once the color is solid, it can be white, pink, yellow etc... I choose my freelancer base on the sample he submits. I don't go on promises or previous work etc... so its best u dont send me any previous work. all bids without samples will be rejected since idk how my finish product will look. in this project all edited photos must have the same background. the freelancer with the best price and the best edited background will win. thanks