The ornamental design for a colormatchingcard, as shown and described.
FIG. 1 is a front view of a color matching card;
FIG. 2 is a rear view thereof;
FIG. 3 is a plan view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is an end view taken along line 5-5 shown in FIG. 1;
FIG. 6 is an end view taken along line 6-6 shown in FIG. 1; and,
FIG. 7 is an end view taken along line 7-7 shown in FIG. 1.
The bottom view is omitted since it is symmetrical to the plan view. The left side view is omitted since it is symmetrical to the right side view. The dash-dash broken lines disclose the features of the color matching card and form no part of the claimed design. The dot-dash broken lines indicate the direction and location of the cutaway views.