Fix numpy.min on strings

squidpy/pl/_spatial_utils.py

@@ -700,7 +700,11 @@ def _map_color_seg(
         cols = colors.to_rgba_array(color_vector.categories)  # type: ignore
     else:
         val_im = map_array(seg, cell_id, cell_id)  # replace with same seg id to remove missing segs
-        cols = cmap_params.cmap(cmap_params.norm(color_vector))
+        try:
+            cols = cmap_params.cmap(cmap_params.norm(color_vector))
+        except TypeError:
+            assert all(colors.is_color_like(c) for c in color_vector), "Not all values are color-like."
+            cols = colors.to_rgba_array(color_vector)
 
     if seg_erosionpx is not None:
         val_im[val_im == erosion(val_im, square(seg_erosionpx))] = 0