add kpfonts and change mpl prologue to load kpfonts and updated style

scripts/matplotlib-stylelib/my-tex.mplstyle

@@ -0,0 +1,36 @@
+# https://matplotlib.org/stable/tutorials/introductory/customizing.html
+
+# font
+font.family:         serif     # family via latex
+text.usetex:         True
+text.latex.preamble: \usepackage{kpfonts}
+
+# size
+savefig.bbox:        tight
+
+# color page area
+figure.facecolor:    0C1C2300  # 'paper color not chart area'
+savefig.facecolor:   auto      # 'paper color not chart area' auto = same as figure
+savefig.transparent: False
+
+# color chart area
+axes.facecolor:      FFFFFF07  # low white alpha; a little brighter than background
+axes.edgecolor:      FFFFFF20
+legend.facecolor:    0C1C23    # no alpha setable
+legend.frameon:      True      # background color
+legend.framealpha:   0.75
+legend.edgecolor:    606060
+grid.color:          FFFFFF
+grid.alpha:          0.1
+
+# color text
+text.color:          FFFFFFD9  # title, legend
+xtick.color:         606060    # xtick label and xtick line, but not xlabel
+xtick.labelcolor:    FFFFFFD9  # xtick label, not xtick line
+ytick.color:         606060    # ytick label and ytick line, but not ylabel
+ytick.labelcolor:    FFFFFFD9  # ytick label, not ytick line
+axes.labelcolor:     FFFFFFD9  # xlabel, ylabel
+legend.labelcolor:   FFFFFFD9
+
+# color data
+axes.prop_cycle:     cycler('color', ['1F78B4', 'E31A1C', '33A02C', 'FF7F00', '6A3D9A', 'FB9A99', 'B2DF8A', 'FDBF6F', 'A6CEE3', 'CAB2D6'])

scripts/matplotlib-stylelib/my.mplstyle

@@ -0,0 +1,41 @@
+# https://matplotlib.org/stable/tutorials/introductory/customizing.html
+
+# font
+font.family:         KpRoman, serif
+text.usetex:         False
+mathtext.fontset:    custom
+mathtext.rm:         KpMath
+mathtext.bf:         KpRoman:bold
+mathtext.it:         KpRoman:italic
+mathtext.sf:         KpSans
+mathtext.tt:         KpMono
+
+# size
+savefig.bbox:        tight
+
+# color page area
+figure.facecolor:    0C1C2300  # 'paper color not chart area'
+savefig.facecolor:   auto      # 'paper color not chart area' auto = same as figure
+savefig.transparent: False
+
+# color chart area
+axes.facecolor:      FFFFFF07  # low white alpha; a little brighter than background
+axes.edgecolor:      FFFFFF20
+legend.facecolor:    0C1C23    # no alpha setable
+legend.frameon:      True      # background color
+legend.framealpha:   0.75
+legend.edgecolor:    606060
+grid.color:          FFFFFF
+grid.alpha:          0.1
+
+# color text
+text.color:          FFFFFFD9  # title, legend
+xtick.color:         606060    # xtick label and xtick line, but not xlabel
+xtick.labelcolor:    FFFFFFD9  # xtick label, not xtick line
+ytick.color:         606060    # ytick label and ytick line, but not ylabel
+ytick.labelcolor:    FFFFFFD9  # ytick label, not ytick line
+axes.labelcolor:     FFFFFFD9  # xlabel, ylabel
+legend.labelcolor:   FFFFFFD9
+
+# color data
+axes.prop_cycle:     cycler('color', ['1F78B4', 'E31A1C', '33A02C', 'FF7F00', '6A3D9A', 'FB9A99', 'B2DF8A', 'FDBF6F', 'A6CEE3', 'CAB2D6'])

settings/org-settings.el

@@ -903,7 +903,24 @@ usage: #+HEADER: :prologue (mpl-prologue)
 "
     (by-backend (latex "")
                 (article-latex "")
-                (t "import matplotlib.pyplot as plt;plt.style.use('dark_background');"))))
+                (t (format "\
+import matplotlib.font_manager
+kpfonts = matplotlib.font_manager.findSystemFonts(fontpaths=['%s'])
+[matplotlib.font_manager.fontManager.addfont(i) for i in kpfonts]
+
+import matplotlib.style
+matplotlib.style.reload_library()
+
+import matplotlib.pyplot as plt
+styles = plt.style.core.read_style_directory('%s')
+plt.style.core.update_nested_dict(plt.style.library, styles)
+try:
+  plt.style.use('my')
+except:
+  pass
+"
+                           (concat config-dir "scripts/fonts")
+                           (concat config-dir "scripts/matplotlib-stylelib")))))
 
 (use-package ol-notmuch
   :after (org))