bugfixes

src/misc.js

@@ -178,9 +178,9 @@ export function uuid() {
 }
 
 export function lightenColor(color, lightness = 85, alpha = null) {
-    let c = new Color(color).hsl().lightness(lightness)
+    let c = new Color(color).hsl().lightness(lightness).rgb()
     if (alpha !== null)
-        c = c.rgb().alpha(alpha)
+        c = c.alpha(alpha)
     return c.string()
 }