Fix graph error and make colors configurable

screen.py

@@ -448,6 +448,42 @@ class KlipperScreen(Gtk.Window):
         css_data = css_base_data + css.read()
         css.close()
 
+        f = open(klipperscreendir + "/styles/base.conf")
+        style_options = json.load(f)
+        f.close()
+
+        self.gtk.color_list = style_options['graph_colors']
+
+        if os.path.exists(klipperscreendir + "/styles/%s/style.conf" % (self.theme)):
+            try:
+                f = open(klipperscreendir + "/styles/%s/style.conf" % (self.theme))
+                style_options.update(json.load(f))
+                f.close()
+            except Exception:
+                logging.error("Unable to parse custom template conf file.")
+
+        for i in range(len(style_options['graph_colors']['extruder']['colors'])):
+            num = "" if i == 0 else i+1
+            css_data += "\n.graph_label_extruder%s {border-left-color: #%s}" % (
+                num,
+                style_options['graph_colors']['extruder']['colors'][i]
+            )
+        for i in range(len(style_options['graph_colors']['bed']['colors'])):
+            css_data += "\n.graph_label_heater_bed%s {border-left-color: #%s}" % (
+                "" if i+1 == 1 else i+1,
+                style_options['graph_colors']['bed']['colors'][i]
+            )
+        for i in range(len(style_options['graph_colors']['fan']['colors'])):
+            css_data += "\n.graph_label_fan_%s {border-left-color: #%s}" % (
+                i+1,
+                style_options['graph_colors']['fan']['colors'][i]
+            )
+        for i in range(len(style_options['graph_colors']['sensor']['colors'])):
+            css_data += "\n.graph_label_sensor_%s {border-left-color: #%s}" % (
+                i+1,
+                style_options['graph_colors']['sensor']['colors'][i]
+            )
+
         css_data = css_data.replace("KS_FONT_SIZE", str(self.gtk.get_font_size()))
 
         style_provider = Gtk.CssProvider()