I think there is an actual control for this.
Put a GuiFadeInBitmapCtrl on top with an image of the color of whatever your background is, and when it's done fading in the background color delete the fade ctrl and make your image invisible
That seems like a pretty bad way. What if you want to fade something out into the PlayGui?
could just gradually change the transparency using mColor
Image.visible = false;
No no no. Use Image.setVisible(0); instead. If there is a function and a variable, you typically want to use the function instead.
What if I'm planning to put the image on the PlayGui?
You can edit the values for the FadeIn control to actually make it fade out.
then you would do playGui.add(myFadeCtrl);