Hi there! We recommend airing out a new rug for a few days. Leave your new rug in a well-ventilated space with your doors and windows open and frequently vacuum over the first few days. For a quicker fix, open your windows and place a fan where it can blow across your new rug. In a small space, consider a portable air filter to help with new rug odor removal.Color differences comes from dye lot variances. Rugs from different production timelines will look slightly different when compared next to each other. Due to differences in monitor size & screen resolution, rugs may appear slightly different in your browser than they do in person. Please feel free to contact cs@safavieh.com if you have any questions. Thank you for your review!