Color Theory & Application Flashcards

What is metamerism in the context of automotive paint color matching?

Answer: A phenomenon where two colors appear to match under one light source but differ under another

Metamerism occurs when two paint samples appear identical under one light source (e.g., sunlight) but look noticeably different under another (e.g., fluorescent), complicating color match verification.

Which paint system uses a pigmented base coat followed by a separate clear coat layer?

Answer: Two-stage (basecoat/clearcoat) system

The two-stage basecoat/clearcoat system applies color in the base layer and gloss/protection via a separate clear coat, which is the dominant OEM system today.

A vehicle's paint code is most reliably located on which document or location for claims purposes?

Answer: The manufacturer's paint code label on the vehicle (door jamb, firewall, or trunk)

OEM paint code labels affixed to the vehicle (commonly in the door jamb, under the hood, or in the trunk) provide the most reliable color reference for accurate matching.

In auto body refinishing, what does 'color rendering index' (CRI) measure?

Answer: How accurately a light source reveals the true colors of objects compared to natural daylight

CRI measures how faithfully a light source renders colors relative to natural daylight; adjusters and painters use high-CRI lighting to ensure accurate color match evaluation.

Which component of a paint formula is primarily responsible for giving the paint its color?

Answer: Pigment

Pigments are the colorant particles in paint that absorb and reflect specific wavelengths of light, determining the visible color of the finish.

When estimating a color match for a pearl (three-stage) finish, an adjuster should anticipate what additional cost compared to a solid color repair?

Answer: Higher labor and material costs due to the mid-coat pearl layer requiring precise blending

Three-stage pearl finishes require a separate mid-coat pearl layer between the base and clear, increasing material usage, application time, and blending complexity.

What is the primary purpose of blending adjacent panels when repairing a localized area of damage?

Answer: To feather the repaired color into surrounding panels so color or texture differences are not visible

Blending transitions the new paint into neighboring panels through a gradual fade, masking any slight color or texture mismatch that could make the repair visible.