docs updates

docs/objects/Object/getBackground.md

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+## getBackground
+Returns the current background color
+
+#### Returns: 
+1. `number` color

docs/objects/Object/getForeground.md

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+## getForeground
+Returns the current foreground color
+
+#### Returns: 
+1. `number` color

docs/objects/Object/remove.md

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+## remove
+Removes the object from it's parent frame. This won't 'destroy' the object, It will continue to exist as long as you still have pointers to it.
+
+Here is a example on how a button will be fully removed from the memory:
+```lua
+local main = basalt.createFrame()
+local button = main:addButton():setPosition(2,2):setText("Close")
+
+button:remove()
+button = nil
+```