diff --git a/src/MainWindow.cpp b/src/MainWindow.cpp
index c8e19917..11c0ca96 100644
--- a/src/MainWindow.cpp
+++ b/src/MainWindow.cpp
@@ -2045,16 +2045,66 @@ void MainWindow::on_treePlotColumns_itemChanged(QTreeWidgetItem *changeitem, int
     } else if(column == PlotColumnY) {
         if(changeitem->checkState(column) == Qt::Checked)
         {
-            // get a default color
-            QColor curbkcolor = changeitem->backgroundColor(column);
-            QColor color = !curbkcolor.isValid() ? (Qt::GlobalColor)(qrand() % 13 + 5) : curbkcolor;
+            // Getget a default colour
+            QColor colour = changeitem->backgroundColor(column);
+            if(!colour.isValid())
+            {
+                static int last_colour_index = 0;
+                switch(last_colour_index++)
+                {
+                case 0:
+                    colour = QColor(0, 69, 134);
+                    break;
+                case 1:
+                    colour = QColor(255, 66, 14);
+                    break;
+                case 2:
+                    colour = QColor(255, 211, 32);
+                    break;
+                case 3:
+                    colour = QColor(87, 157, 28);
+                    break;
+                case 4:
+                    colour = QColor(126, 0, 33);
+                    break;
+                case 5:
+                    colour = QColor(131, 202, 255);
+                    break;
+                case 6:
+                    colour = QColor(49, 64, 4);
+                    break;
+                case 7:
+                    colour = QColor(174, 207, 0);
+                    break;
+                case 8:
+                    colour = QColor(75, 31, 111);
+                    break;
+                case 9:
+                    colour = QColor(255, 149, 14);
+                    break;
+                case 10:
+                    colour = QColor(197, 00, 11);
+                    break;
+                case 11:
+                    colour = QColor(0, 132, 209);
+
+                    // Since this is the last colour in our table, reset the counter back
+                    // to the first colour
+                    last_colour_index = 0;
+                    break;
+                default:
+                    // NOTE: This shouldn't happen!
+                    colour = QColor(0, 0, 0);
+                    break;
+                }
+            }
 
             // Set colour
-            changeitem->setBackgroundColor(column, color);
+            changeitem->setBackgroundColor(column, colour);
 
             // Save settings for this table
             PlotSettings& plot_settings = browseTableSettings[current_table].plotYAxes[changeitem->text(PlotColumnField)];
-            plot_settings.colour = color;
+            plot_settings.colour = colour;
             plot_settings.lineStyle = ui->comboLineType->currentIndex();
             plot_settings.pointShape = (ui->comboPointShape->currentIndex() > 0 ? (ui->comboPointShape->currentIndex()+1) : ui->comboPointShape->currentIndex());
         }