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Continue to ChatQuery : Subtle radial gradient for the background. It has a constant hue. The saturation varies because they wanted a soft, plastic effect. The "hole" effect is made via a Photoshop feature called https://vmapp.org/query/1067/Subtle-Radial-Gradient-For-The-Background-It-Has-A-Constant-Hue-The-Saturation-Varies-Because-They-Wanted-A-Soft-Plastic-Effect-The-Hole-Effect-Is-Made-Via-A-Photoshop-Feature-Called/