The ornamental design for a mixingpalette, as shown.
FIG. 1 is a top plan view of a mixing palette showing our new design, the
bottom plan view being a mirror image thereof with the depressions being
on the opposite end;
FIG. 2 is a side elevational view, the opposite side being identical
thereto; and,
FIG. 3 is an end elevational view, the opposite end being identical thereto
.