How do I use the item I unlock?

[Styles]

Cant find a way to use them lollerskates

[A_Phosphorus_Invention]

You mean new ball skins?
...
...
That sounds really awkward, let me think of something else.

Okay, you mean different types of Spectraballs? When you return to the main menu, the arrow keys should change the pattern you want to use. If your mouse pointer is available you can hit the arrows if my memory serves me right.

Hope that helped. :D