Color Matching, Mixing, and Tinting
Color Matching, Mixing, and Tinting tests variant selection, sprayout technique, and controlled tinting. Modern colors often have multiple variants, so the formula name on the can is only a starting point.
Core rules
- Identify the OEM color code and then choose the variant that matches the vehicle's current finish, not the code alone.
- Use a spectrophotometer as a tool, but verify with a sprayout panel and your eye under booth light and daylight.
- Metallic and pearl colors change with film build, gun distance, and orientation. Keep test panels at the same technique as the repair.
- Make a let-down panel or sprayout card; compare face, side, and flop. For three-stage colors, check the midcoat and clear together.
- Blend within the panel and into adjacent panels when a panel-paint match is not achievable; do not butt-match a metallic at a hard edge.
- Tint in small increments, record additions, and stir metallic thoroughly. Over-tinting shifts the color and can ruin the batch.
Worked example
A silver bumper reads too dark against the fender. The spectrophotometer suggests a variant, but a sprayout at 6 mils wet looks dark at the side angle. The technician reduces film build to the recommended two medium coats, checks flop, then blends into the fender. Reason: silver can look close at face angle but wrong at side because metallic orientation and film thickness differ.
Traps
Matching under a single light source, judging wet paint as final, adding tint before stirring, and choosing a variant from the code without a sprayout. Another trap is matching a blendable color only at the edge.