"Shades of grey" is an idiom that refers to a range of colors or shades, particularly those that are neutral and don't have a clear definition or distinction between them.

"Get act together" is an idiom that means to prepare oneself or one's affairs for a task or situation, usually by gathering information or resources needed for it. It can also refer to organizing one's thoughts or plans before taking action.

The idiom "where there's a will, there's a way" means that if someone is determined to do something, they will find a way to make it happen, regardless of obstacles or difficulties. This expression can be used in various contexts and often implies a sense of creativity or resourcefulness.

The idiom "beat the air" refers to someone or something that is extremely energetic, enthusiastic, or excited. It can also mean someone who is restless, agitated, or overly anxious.

The idiom "for a song" means to be very cheap or low-priced, often to the point of being almost free. It can also mean that something is done quickly and easily, without much effort or expense.