| Kiln-Fired Glass Enamel | Very high when properly fired; the color becomes fused to the glass surface. | Excellent resistance to normal indoor sunlight and temperature changes. | Permanent color details, outlines, eyes, feathers, and decorative accents. | Durable, washable, and less likely to peel or soften than air-dried coatings. | Requires suitable firing equipment and compatible glass; color may change during firing. | Excellent |
| UV-Resistant Glass Paint | Good to very good, depending on the pigment, binder, and amount of direct sunlight. | Good for indoor displays; prolonged direct sun can still cause gradual fading. | Hand-painted details when kiln firing is not practical. | Available in many transparent and opaque colors; easy to apply in thin layers. | Needs correct surface preparation and curing; quality varies between formulations. | Good |
| UV-Resistant Clear Protective Coating | Helps slow fading when applied over a compatible decorative finish. | Good when labeled for UV exposure and used indoors; not a guarantee against fading. | Extra protection for painted areas that receive regular window sunlight. | Can reduce surface wear and add a consistent sheen. | May alter transparency or gloss; compatibility testing is necessary before full application. | Good |
| Transparent Glass Stain | Moderate to good; transparent pigments may appear less vivid as they fade. | Moderate resistance under strong direct sunlight. | Light-transmitting wings, feathers, leaves, and background sections. | Creates a luminous effect when sunlight passes through the glass. | Thin transparent layers can show fading sooner than fired enamel or highly pigmented paint. | Good for Filtered Light |
| Standard Air-Dry Acrylic Paint | Moderate; indoor exposure is usually acceptable, but direct sunlight may fade some colors. | Moderate resistance; dark or highly saturated colors may change first. | Occasional-use decorations placed away from intense windows. | Affordable, widely available, and simple to touch up. | Can scratch, chip, or lose color faster without a compatible protective coating. | Moderate |
| Decorative Vinyl Film | Moderate to good for short- or medium-term indoor use, depending on film quality. | Moderate; adhesive and color may weaken with heat and prolonged sun exposure. | Temporary color blocking, pattern testing, or removable accents. | Fast application, clean edges, and easy replacement. | May lift at edges, trap air bubbles, or reduce the handcrafted appearance of stained glass. | Moderate |