feat: better regionFill gradients

src/js/utils/draw.js

@@ -156,7 +156,7 @@ export function makeGradient(svgDefElem, color, lighter = false) {
 	let gradientDef = renderVerticalGradient(svgDefElem, gradientId);
 	let opacities = [1, 0.6, 0.2];
 	if (lighter) {
-		opacities = [0.4, 0.05, 0];
+		opacities = [0.15, 0.05, 0];
 	}
 
 	setGradientStop(gradientDef, "0%", color, opacities[0]);