FIG. 1 is a front perspective view of a solid ink stick for a color printer showing the top surface and the contour of the left side surface and the end surface;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevational view thereof showing the contour of the left side;

FIG. 4 is a right side elevational view thereof showing the contour of the right side; and,

FIG. 5 is an end elevational view thereof, the opposite end being identical.

The broken line portions of FIGS. 1, 3, 4, and 5 are environmental only and form no part of the claimed design.