title: Changing hatch color in matplotlib
body: <p>Thanks for helping me get this graph right!</p>
  
  <p>I have another issue now, that I wish to change the color of the hatch lines to grey. </p>
  
  <p>I am working with matplotlib version 1.5.3'. I have tried mlp.rcParams['hatch.color'] = 'k'</p>
  
  <p>But it doesn't seem to work... </p>
  
  <p>Here is the code for the figure I already have, thanks to you:</p>
  
  <pre class="lang-py prettyprint-override"><code>
  import seaborn as sns
  import matplotlib.pyplot as plt
  mypallet = sns.color_palette([(190/256,7/256, 18/256),(127/256, 127/256, 127/256)])
  import itertools
  import numpy as np
  
  plt.rcParams['figure.figsize'] = 7, 5
  tips = sns.load_dataset("tips")
  tips[(tips.day=='Thur') &amp; (tips.sex=='Female') ] = np.nan
  print(sns.__version__)
  print(tips.head())
  # Bigger than normal fonts
  sns.set(font_scale=1.5)
  
  ax = sns.swarmplot(x="day", y="total_bill", hue="sex",
                   data=tips, dodge=True, color='k')
  
  #get first patchcollection
  c0 = ax.get_children()[0]
  x,y = np.array(c0.get_offsets()).T
  #Add .2 to x values
  xnew=x+.2
  offsets = list(zip(xnew,y))
  #set newoffsets
  c0.set_offsets(offsets)
  
  ax = sns.barplot(x="day", y="total_bill", hue="sex",
                   data=tips, capsize=0.1, alpha=0.8,
                   errwidth=1.25, ci=None, palette=mypallet)
  xcentres = [0.2, 1, 2, 3]
  delt = 0.2
  xneg = [x-delt for x in xcentres]
  xpos = [x+delt for x in xcentres]
  xvals = xneg + xpos
  xvals.sort()
  yvals = tips.groupby(["day", "sex"]).mean().total_bill
  yerr = tips.groupby(["day", "sex"]).std().total_bill
  
  (_, caps, _)=ax.errorbar(x=xvals, y=yvals, yerr=yerr, capsize=4,
                           ecolor="red", elinewidth=1.25, fmt='none')
  for cap in caps:
      cap.set_markeredgewidth(2)
  
  
  handles, labels = ax.get_legend_handles_labels()
  l = ax.legend(handles[0:2], labels[0:2]) # changed based on https://stackoverflow.com/a/42768387/8508004
  #sns.ax.ylim([0,60]) #original
  ax.set_ylim([0,60]) # adapted from https://stackoverflow.com/a/49049501/8508004 and change to legend
  ax.set_ylabel("Out-of-sample R2") # based on https://stackoverflow.com/a/46235777/8508004
  ax.set_xlabel("") # based on https://stackoverflow.com/a/46235777/8508004
  
  for i, bar in enumerate(ax.patches):
      hatch = '///'
      bar.set_hatch(hatch)
      bar.set_x(bar.get_x() + bar.get_width()/2)
      break
  
  </code></pre>
  
  <p>I'd like to change the color of the hatch pattern from black to grey: (127/256, 127/256, 127/256)</p>