Custom Gradients & Styles

I would like the ability to save custom gradients.

I could see them being added to Gradient Fill > Preset Colours. Although, being able to save them to a colour palette would be even handier.

 

I would also like the ability to save custom styles. Saving them with states would be handiest, although creating a gallery of them that includes each of the state styles would also work. Currently we have the ability to save text styles, but we need the same for shapes.