Improve style of QCheckBox and QRadioButton

src/blackgui/share/qss/stdwidget.qss

@@ -11,6 +11,17 @@ Used dynamic properties
 framelessMainWindow (infobar.qss , here)
 */
 
+QCheckBox::indicator {
+  color: #b1b1b1;
+  border: 1px solid #7f7f7f;
+  width: 15px;
+  height: 15px;
+}
+
+QCheckBox::indicator::checked {
+  image: url(:/diagona/icons/diagona/icons/tick.png);
+}
+
 /* Main window */
 QMainWindow {
   background-image: url(:/textures/icons/textures/texture-outer.jpg);
@@ -362,6 +373,23 @@ BlackGui--Components--CMarginsInput {
   color: black;
 }
 
+QRadioButton::indicator:checked, QRadioButton::indicator:unchecked {
+  color: #b1b1b1;
+  background-color: #000000;
+  border: 1px solid #b1b1b1;
+  border-radius: 7px;
+}
+
+QRadioButton::indicator:checked {
+  background-color: qradialgradient(
+    cx: 0.5, cy: 0.5,
+    fx: 0.5, fy: 0.5,
+    radius: 1.0,
+    stop: 0.25 #32cd32,
+    stop: 0.3 #000000
+  );
+}
+
 QScrollArea {
   border: 1px solid green;
   border-radius: 5px;