Skin-Safe & Durable Paint Kit for Smartwatch Customization

The user wants to paint their Garmin smartwatch plastic part black, specifically asking for paint suggestions that are durable, safe for skin contact, and suitable for slightly rough plastic. This points to an unmet need for specialized customization products for wearable electronics. A DIY 'Wearable Customization Kit' including a range of skin-safe, durable paints (primers, color coats, clear coats) specifically formulated for the plastics and materials found on smartwatches and other personal tech items would be a valuable product for individuals looking to personalize their gadgets safely and effectively.