black and white edition

handout/diagrams/halfspaces.tex

@@ -7,7 +7,7 @@
 
     \draw[
         fill,
-        red
+        gray
     ] (-2, -3) -- (-2,-4) -- (2,-6) -- (4.3,-6) -- (4.3,-4) -- cycle;
 
     \draw[
@@ -17,12 +17,12 @@
 
     \draw[
         fill,
-        blue
+        darkgray
     ]  (1.7,-2) circle (15pt);
 
     \draw[
         fill,
-        blue
+        darkgray
     ]  (0.4,-4.2) circle (15pt);
 
     \node (fu) at (1.4,-1) {\LARGE $f_u$ $(+)$};