Clean / Remove Background Of Images- Start Immediately

There are 20 images total. The images need to have their background cleaned/removed. The problem I am having is when I remove the background the color of the dress and skin gets dull. We need it to be exactly the same as the original picture, except for a cleaned/removed background, as people need to see the exact color of the dress to purchase the product Attached is a a file with 4 images. Two is called "ORIGINAL" (Font and Back) and then the other 2 are examples "COPY" files from the variations I need of them. I need a thumbnail size, a large picture of the front, a large picture of the back, and one large picture side by side. There is currently a thumbnail size and a side by side file to show you want I mean. I will also need the front and back in separate files. Please compare the original files to the COPY files and you will see the difference in color. I don't want it like that and need it to be exact. Please show me that you can get it exact in order to get the job. Would like to get this started immediately and person who can get it started immediately, finish soon (please tell me how fast you can have it to me), and get it done right will get the job now. Thank you.