I have noticed a new attribute named ‘Color’ in the new entity form (Online, 2015 RU 0.1).
It is not documented in the online help yet, but guessing this attribute purpose is not difficult: customize the entity panel color in the navigation menu for custom and existing (OOTB) entities. Nice!
The Color attribute input text length is limited to 7 characters, to match a color Hex code such as #FF6600 (Orange). Setting a Hex code will let you preview the represented color in the preview box beside the attribute text box.
You can find any color Hex code in web site like this.
