make transparent transparent. Works better on dark

docs/animationwindow/helpers.md

@@ -34,6 +34,7 @@ Klikk her å velge farge:
 	function startup() {
 		colorPicker = document.getElementById("colorPicker");
 		colorPicker.addEventListener("change", colourSelectionChanged, false);
+		colorPicker.setValue("#399AD5");
 	}
 </script>
 
@@ -62,7 +63,7 @@ Det er vanligvis langt lettere å bruke en forhåndsdefinert farge i stedet for
 
 <table>
 <tr><td style="font-weight: bold;">Color verdi</td><td style="font-weight: bold;">Farge</td></tr>
-<tr><td>Color::transparent</td><td style="background-color:#ffffff;">(transparant)</td></tr>
+<tr><td>Color::transparent</td><td style="background-color: rgba(0, 0, 0, 1);">(transparant)</td></tr>
 <tr><td>Color::black</td><td style="background-color:#000000;"></td></tr>  
 <tr><td>Color::silver</td><td style="background-color:#c0c0c0;"></td></tr>     
 <tr><td>Color::gray</td><td style="background-color:#808080;"></td></tr>