I claim the ornamental design for a spray can paint tester station, as shown and described.
FIG. 1 is a perspective view of the design of the present invention for a spray can paint tester station;
FIG. 2 is a front elevation view of the invention of FIG. 1;
FIG. 3 is a rear elevation view of the invention of FIG. 1;
FIG. 4 is a left side elevation view of the invention of FIG. 1, the right side elevation view being a mirror image thereof;
FIG. 5 is a top plan view of the invention of FIG. 1; and,
FIG. 6 is a bottom plan view of the invention of FIG. 1.
The broken line showing of an arm using a spray can is included for purpose of illustrating environmental structure only and forms no part of the claimed design.