Use matplotlib's style sheet as default color scheme.

'seaborn-v0_8-colorblind' is used as default.
But off-black is inserted as the first available color, for observation.

schimpy/batch_metrics.py

@@ -23,7 +23,7 @@
     safe_window, check_if_all_tss_are_bad, fill_gaps
 from dms_datastore.read_ts import *
 
-from schimpy.plot_default_formats import dwr_accessiable1_style_cycler
+from schimpy.plot_default_formats import dwr_accessiable1_style_cycler,seaborn_style_cycler
 from cycler import cycler
 
 matplotlib.use('Agg')  # To prevent an unwanted failure on Linux
@@ -553,9 +553,10 @@ def plot(self):
                     labels_to_plot[0] += " - {:g}".format(-adj_obs)
 
             if ("palette" in params.keys()):
-                if params['palette'] == 'dwr_accessible1':
+                if params['palette'] == 'default':
+                    style_palette=seaborn_style_cycler
+                elif params['palette'] == 'dwr_accessible1':
                     style_palette=dwr_accessiable1_style_cycler
-
                 elif params['palette'] == 'custom':
                     if ('custom_palette' in params.keys()):
                         if 'linecolor' in params['custom_palette']:
@@ -564,7 +565,7 @@ def plot(self):
                                 raise ValueError("Specify correct number of linecolors!")
                             linecolor = linecolor[:len(labels)]
                         else:
-                            linecolor = dwr_accessiable1_style_cycler.by_key()['color'][:len(labels)]
+                            linecolor = seaborn_style_cycler.by_key()['color'][:len(labels)]
                             print("'linecolor' not specified in 'custom_palette'. Default used")
 
                         if 'linestyle' in params['custom_palette']:
@@ -582,7 +583,7 @@ def plot(self):
                                 raise ValueError("Specify correct number of linewidths!")
                             linewidth = linewidth[:len(labels)]
                         else:
-                            linewidth = dwr_accessiable1_style_cycler.by_key()['linewidth'][:len(labels)]
+                            linewidth = seaborn_style_cycler.by_key()['linewidth'][:len(labels)]
                             print("'linewidth' not specified in 'custom_palette'. Default used")
 
                         style_palette = cycler(color=linecolor, linestyle=linestyle, linewidth=linewidth)
@@ -594,7 +595,7 @@ def plot(self):
                     raise ValueError("palette missing!")
 
             else:
-                style_palette=dwr_accessiable1_style_cycler
+                style_palette=seaborn_style_cycler
                 self.logger.info("No style palette is given, default used.")
 
             if plot_format == 'simple':

schimpy/plot_default_formats.py

@@ -24,6 +24,10 @@
 dwr_accessiable1_style_cycler=(cycler(linestyle=['-','--'])*cycler(color=["#323232","#D55E00","#0173B2"])
                                *cycler(linewidth=[1.5]))
 
+# Use seaborn-v0_8-colorblind, but insert off-black as the first color.
+seaborn_style_cycler=(cycler(linestyle=['-'])
+                     *cycler(color=["#0F0F0F"] + mpl.style.library['seaborn-v0_8-colorblind']["axes.prop_cycle"].by_key()["color"])
+                     *cycler(linewidth=[1.5]))
 line_thickness = 1.
 
 # Metrics format dictionary