Implementing Color Inversion property for Chance Player icon

[PARAG00991]

The Chance Player icon on toolbar doesn't show any color inversion when mouse pointer is moved over it like the other icons on the toolbar except the player icons. The icon actually doesn't look distinguishable with its background color on hover or when the icon is selected. I can implement this but first I'd like to get it approved that whether it is required or not.
@stengel , what are you thoughts on this?

[kagolaub]

Ah, I think I solved this little design issue a while ago. I'll push it and make a pull request to just showcase this option; the error resided in the button's inline css in Tools.js overriding the inheritance of color from the button-sacnite hover class. To fix this, I chose to add another layer of specificity for the button style definition.