Fixed small bug

Small bugfix where the warning would be in a strange colour as it is monochrome

apps/aptsciclk/app.js

@@ -144,6 +144,7 @@ var curWarning = Math.floor(Math.random() * (maxWarning+1));
 function buttonPressed(){
   if (curWarning < maxWarning) curWarning += 1;
   else curWarning = 0;
+  g.reset();
   buttonImg = getImg("butPress");
   g.drawImage(buttonImg, 0, 0);