The ornamental design for paint color display cards, as shown and described.
FIG. 1 is a front view of a set of three paint color display cards, showing the new design, with the broken line showing for illustrative purposes only and forming no part of the claimed design;
FIG. 2 is a side view of the set of paint color display cards of FIG. 1;
FIG. 3 is a top view of the set of paint color display cards of FIG. 1; and,
FIG. 4 is a rear view of the set of paint color display cards of FIG. 1.
The inventor's design is directed toward a pattern of adjacent polygonal paint color samples in a paint color display, as shown. This pattern is useful to permit a customer to select a paint color. In one use, the individual paint color samples may be of varying colors. However, color is not claimed as a feature of the design.