The ornamental design for a colposcope, as shown and described.
FIG. 1 is a right upper perspective view of a colposcope.
FIG. 2 is a left front perspective view of the colposcope.
FIG. 3 is a left lower perspective view of the colposcope.
FIG. 4 is a left front lower perspective view of the colposcope.
FIG. 5 is a left view of the colposcope.
FIG. 6 is a right view of the colposcope.
FIG. 7A is a first embodiment of a front view of the colposcope.
FIG. 7B is a second embodiment of the front view of the colposcope.
FIG. 8 is a rear view of the colposcope.
FIG. 9 is a top view of the colposcope; and,
FIG. 10 is a bottom view of the colposcope.
The broken lines immediately adjacent the shaded areas represent the bounds of the claimed design while all other broken lines are directed to environment and are for illustrative purposes only; the broken lines form no part of the claimed design.