diff --git a/scripts/test_clipping.py b/scripts/test_clipping.py
index 72df4a1..083cb9b 100755
--- a/scripts/test_clipping.py
+++ b/scripts/test_clipping.py
@@ -3,19 +3,27 @@ import upiwin
 
 hdc = upiwin.DevCtxt(type='screen')
 hdc.text_color = 0xFFFFFF  # white
-hdc.rectangle(100, 100, 199, 199)
+hdc.rectangle(99, 99, 200, 200)
 
 clip = hdc.get_clip_rect()
 hdc.set_clip_rect(100, 100, 200, 200)
 
 hdc.text_color = 0x0000FF  # red
-hdc.move_to(50, 199)
-hdc.line_to(199, 50)
+hdc.move_to(50, 200)
+hdc.line_to(200, 50)
 
 hdc.text_color = 0x00FF00  # green
-hdc.move_to(250, 199)
+hdc.move_to(250, 200)
 hdc.line_to(100, 50)
 
+hdc.text_color = 0xFF0000  # blue
+hdc.move_to(50, 100)
+hdc.line_to(200, 250)
+
+hdc.text_color = 0x00FFFF  # yellow
+hdc.move_to(250, 100)
+hdc.line_to(100, 250)
+
 hdc.set_clip_rect(clip[0], clip[1], clip[2], clip[3])
 
 msg = {}