Double sleeve tattoo design in a surreal style, with one arm representing 'good' and the other 'evil.' The 'good' arm features a soft, luminous color palette of whites, silvers, pastel blues, and glowing golds, with flowing, harmonious patterns and serene gradients symbolizing purity and balance. The 'evil' arm contrasts with a dark and intense palette of deep reds, blacks, smoky greys, and metallic purples, showcasing jagged, chaotic forms and bold angular designs exuding intensity and turmoil. The division between the two sleeves is striking and deliberate, clearly highlighting their opposing natures. Avoid religious symbols or animals, focusing on abstract yet vivid representations of duality.