diff --git a/openrndr-demos/src/demo/kotlin/DemoContourIntersections01.kt b/openrndr-demos/src/demo/kotlin/DemoContourIntersections01.kt
index ff081726..7bac9a49 100644
--- a/openrndr-demos/src/demo/kotlin/DemoContourIntersections01.kt
+++ b/openrndr-demos/src/demo/kotlin/DemoContourIntersections01.kt
@@ -29,7 +29,7 @@ fun main() {
                     }
                 }
                 for (i in ints) {
-                    drawer.circle(i.position, 15.0)
+                    drawer.circle(i.position, 10.0)
                 }
             }
         }
diff --git a/openrndr-demos/src/demo/kotlin/DemoContourIntersections02.kt b/openrndr-demos/src/demo/kotlin/DemoContourIntersections02.kt
index adea09c0..2b53aa87 100644
--- a/openrndr-demos/src/demo/kotlin/DemoContourIntersections02.kt
+++ b/openrndr-demos/src/demo/kotlin/DemoContourIntersections02.kt
@@ -12,7 +12,6 @@ fun main() {
                 val circle = Circle(mouse.position, 200.0).contour
 
                 drawer.fill = null
-                drawer.stroke = ColorRGBa.GREEN
                 for (y in 50 until height step 100) {
                     for (x in 50 until width step 100) {
 
@@ -21,8 +20,10 @@ fun main() {
 
                             val ints = intersections(circle, r)
                             if (ints.isEmpty()) {
+                                drawer.stroke = ColorRGBa.GREEN
                                 drawer.contour(r)
                             } else {
+                                drawer.stroke = ColorRGBa.WHITE
                                 ints.map { it.contourTB }.let { it + it.take(1) }.zipWithNext().forEach {
                                     val end = if (it.second <= it.first) it.second + 1.0 else it.second
                                     val sub = r.sub(it.first, end)
diff --git a/openrndr-demos/src/demo/kotlin/DemoContourIntersections03.kt b/openrndr-demos/src/demo/kotlin/DemoContourIntersections03.kt
index 6d0529fd..eab7e384 100644
--- a/openrndr-demos/src/demo/kotlin/DemoContourIntersections03.kt
+++ b/openrndr-demos/src/demo/kotlin/DemoContourIntersections03.kt
@@ -1,5 +1,6 @@
 import org.openrndr.application
 import org.openrndr.color.ColorRGBa
+import org.openrndr.draw.LineJoin
 import org.openrndr.math.Vector2
 import org.openrndr.shape.ShapeContour
 import org.openrndr.shape.intersections
@@ -9,22 +10,25 @@ import kotlin.math.sin
 
 fun main() = application {
     program {
-        val contour = ShapeContour.fromPoints(
-                List(80) {
-                    val a = PI * 2 * it / 80.0
-                    val x = 200.0 * sin(a * 2)
-                    val y = 200.0 * cos(a)
-                    Vector2(x, y)
-                }, closed = true
-        )
-        val ints = intersections(contour, contour)
+        val points = 200
         extend {
+            val contour = ShapeContour.fromPoints(
+                    List(points) {
+                        val a = PI * 2 * it / points
+                        val x = (200 + 50 * cos(a * 2)) * sin(a * 3 + sin(a))
+                        val y = 150 * cos(a * 2 + seconds * 0.2)
+                        Vector2(x, y)
+                    }, closed = true
+            )
+            val ints = intersections(contour, contour)
             drawer.run {
                 clear(ColorRGBa.WHITE)
                 translate(width * 0.5, height * 0.5)
                 fill = null
                 stroke = ColorRGBa.BLACK
+                lineJoin = LineJoin.ROUND
                 contour(contour)
+                fill = ColorRGBa.PINK.opacify(0.3)
                 circles(ints.map { it.position }, 10.0)
             }
         }