I finally found a tool to get my eyeshadows out of the palette! Yay!
I was trying to use tweezers or nail files and couldn't get the shadows out of the palette without ruining them. But I finally found a nail file that was thin enough to get into the corner of the palette and can now tell you what the colours are :)
White: D.S. 496
Black: AMC 65
Yellow: D.S. 474
Brown: Matte 329
So, if any of you liked these colours from seeing them in previous posts, now you can finally know what the numbers/names are!