Use nvgGlobalTint() instead of nvgGlobalAlpha() for drawing lights.

src/Octave.cpp

@@ -66,7 +66,7 @@ struct OctaveButton : Widget {
 			activeOctave = std::round(pq->getValue());
 
 		// Disable tinting when rack brightness is decreased
-		nvgGlobalAlpha(args.vg, 1.0);
+		nvgGlobalTint(args.vg, color::WHITE);
 
 		if (activeOctave == octave) {
 			// Enabled

src/Quantizer.cpp

@@ -129,7 +129,7 @@ struct QuantizerButton : OpaqueWidget {
 		Rect r = box.zeroPos().grow(Vec(margin, margin / 2).neg());
 
 		// Disable tinting when rack brightness is decreased
-		nvgGlobalAlpha(args.vg, 1.0);
+		nvgGlobalTint(args.vg, color::WHITE);
 
 		nvgBeginPath(args.vg);
 		nvgRect(args.vg, RECT_ARGS(r));

src/Scope.cpp

@@ -302,7 +302,7 @@ struct ScopeDisplay : TransparentWidget {
 			return;
 
 		// Disable tinting when rack brightness is decreased
-		nvgGlobalAlpha(args.vg, 1.0);
+		nvgGlobalTint(args.vg, color::WHITE);
 
 		float gainX = std::pow(2.f, std::round(module->params[Scope::X_SCALE_PARAM].getValue())) / 10.f;
 		float gainY = std::pow(2.f, std::round(module->params[Scope::Y_SCALE_PARAM].getValue())) / 10.f;

src/VCA.cpp

@@ -206,7 +206,7 @@ struct VCA_1VUKnob : SliderKnob {
 		nvgFill(args.vg);
 
 		// Disable tinting when rack brightness is decreased
-		nvgGlobalAlpha(args.vg, 1.0);
+		nvgGlobalTint(args.vg, color::WHITE);
 
 		const Vec margin = Vec(3, 3);
 		Rect r = box.zeroPos().grow(margin.neg());