JDK-8311895 adds support for CSS transitions, which are implicit animations for interpolatable types (i.e. primitives or types that implement the `Interpolatable` interface).

The following types should also implement the `Interpolatable` interface to make them compatible with CSS transitions:

* Insets
* Background
* BackgroundFill
* BackgroundImage
* BackgroundPosition
* BackgroundSize
* Border
* BorderImage
* BorderStroke
* BorderWidths
* CornerRadii
* Stop
* Paint and all of its subclasses
* Margins (internal type)
* BorderImageSlices (internal type)