Description of problem:  
    Sometimes, the painter has the unpleasant surprise to find out
    that the sprayed panel does not match the adjacent panel
    when the masking paper is removed.

Causes:          
    – Incorrect spraying technique. Paint is applied too wet or too dry.
    – Incorrect spray gun set-up.
    – Incorrect spraying pressure.
    – Poor opacity.
    – Original panel color has been altered because of weathering.
    – Color is off shade initially.

Preventive measures:
    – Spray test card before application.
    – Blend in color.

Remedy:
    – Polish adjoining panel to check color.
    – Tint the color, sand, repaint.
    – Blend in Color.