1) Keep the selected columns for the X and Y-axis.

2) Lighten the color of the stacked line chart.

web/pgadmin/static/js/chartjs/index.jsx

@@ -222,3 +222,37 @@ export function ConvertHexToRGBA(hex, opacity) {
 
   return `rgba(${r},${g},${b},${opacity / 100})`;
 }
+
+// This function is used to Lighten/Darken color.
+export function LightenDarkenColor(color, amount) {
+  let usePound = false;
+  if (color[0] == '#') {
+    color = color.slice(1);
+    usePound = true;
+  }
+
+  let num = parseInt(color, 16);
+
+  let r = (num >> 16) + amount;
+  if (r > 255) {
+    r = 255;
+  } else if (r < 0) {
+    r = 0;
+  }
+
+  let b = ((num >> 8) & 0x00FF) + amount;
+  if (b > 255) {
+    b = 255;
+  } else if (b < 0) {
+    b = 0;
+  }
+
+  let g = (num & 0x0000FF) + amount;
+  if (g > 255) {
+    g = 255;
+  } else if (g < 0) {
+    g = 0;
+  }
+
+  return (usePound?'#':'') + (g | (b << 8) | (r << 16)).toString(16);
+}