added pyqtgraph style adjustments

theme.py

@@ -1,5 +1,6 @@
 from PyQt5.QtCore import Qt
 from PyQt5.QtGui import QPalette, QColor
+import pyqtgraph as pg
 
 
 WHITE = Qt.white
@@ -10,12 +11,18 @@ BLUE   = QColor("#003e6e")
 GREY0 = QColor(25, 25, 25) # dark
 GREY1 = QColor(35, 35, 35)
 GREY2 = QColor(50, 50, 50)
-GREY3 = QColor(125, 125, 125) # light
+GREY3 = QColor(125, 125, 125)
+GREY4 = QColor(200, 200, 200) # light
 
 MDI_BKG = QColor(150, 150, 150)
 
 
 def apply(app):
+    apply_qapp(app)
+    apply_pg()
+
+
+def apply_qapp(app):
     app.setStyle("Fusion")
 
     pal = QPalette()
@@ -47,4 +54,26 @@ def apply(app):
     app.setPalette(pal)
 
 
+def apply_pg():
+    pg.setConfigOption("foreground", "w")
+    pg.setConfigOption("background", GREY0)
+
+
+def pg_plot_style():
+    pen = pg.mkPen(
+        GREY4,
+        width=3
+    )
+
+    style = dict(
+        pen=pen,
+        symbol="o",
+        symbolPen=GREY4,
+        symbolBrush=VIOLET,
+        symbolSize=8
+    )
+
+    return style
+
+