Updated docs

There is still stuff to do

docs/objects/Object/setBackground.md

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+## setBackground
+Changes the object background color, if you set the value to false the background wont be visible. For example you could see trough a frame.
+#### Parameters: 
+1. `number|color` Background color
+
+#### Returns:
+1. `object` The object in use
+
+#### Usage:
+* Creates a frame, and sets its background color to `colors.gray`
+```lua
+local mainFrame = basalt.createFrame():setBackground(colors.gray)
+```
+```xml
+<button bg="gray" />
+```