Hover effects for colored buttons

src/main/resources/assets/jfx/main.css

@@ -1,12 +1,18 @@
 Button.green {
     -fx-background-color: #56893b;
 }
+Button.green:hover {
+    -fx-background-color: #72a157;
+}
 Button.green:pressed {
     -fx-background-color: #457229;
 }
 Button.red {
     -fx-background-color: #ff4848;
 }
+Button.red:hover {
+    -fx-background-color: #ff5e5e;
+}
 Button.red:pressed {
     -fx-background-color: #9c2121;
 }