fix mpl.colors import

Author: amorison

src/stagpy/field.py

@@ -6,6 +6,7 @@
 from itertools import chain
 
 import matplotlib as mpl
+import matplotlib.colors as mpl_colors
 import matplotlib.patches as mpat
 import matplotlib.pyplot as plt
 import numpy as np
@@ -246,7 +247,7 @@ def plot_scalar(
         cmap=conf.field.cmap.get(var),
         vmin=conf.plot.vmin,
         vmax=conf.plot.vmax,
-        norm=mpl.colors.LogNorm() if var == "eta" else None,
+        norm=mpl_colors.LogNorm() if var == "eta" else None,
         rasterized=conf.plot.raster,
         shading="flat",
     )