riddle - A Fountain of Colors

A Fountain of Colors

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A rock overlooks as my garden unfurls.

His pebble admires as the nice sky, it swirls.

The odd-looking pink one is chipper today.

The lily exposes when Chopin I play.

There's one that is orange (or copper) in hue.

The yellow one listens intently to you.

The Kraspedia's distant, does it make a sound?

The blue one is wilted; another's turned brown.

So the question is: What's so special about my garden?

EDIT: fixed typos: "at" in the second line to "as," as intended, and uncapitalized "Lily," to avoid confusion. (the capitalization was not a hint!)

EDIT 2: After a little research, I added two tags lateral-thinking and trivia.

EDIT 3: Another tag added, chiseling down the trivia tag: movies.

Hint:

Notice the six colors used (including lily), maybe this particular combination will seem familiar.

Answer

Your garden contains

Characters of Reservoir Dogs

Because

The main characters in that movie are

Mr. Brown
Mr. White
Mr. Pink
Mr. Blue
Mr. Orange

Mr. Blonde (lily)
Joe Cabot
The cop
The nice guy
K-Billy

And you are talking about their characteristics.

A rock overlooks as my garden unfurls.

I think this refers to Joe Cabot, the mastermind behind the jewel heist

His pebble admires as the nice sky, it swirls.

Rock's pebble, his son Eddie Cabot is the Nice Guy in the beginning of the movie and he is not a Nice guy afterwards.

The odd-looking pink one is chipper today.

Mr. Pink is happy because he got the diamond.

There's one that is orange (or copper) in hue.

Mr. Orange is the undercover cop

The yellow one listens intently to you

Mr. White is a veteran gangster and a silent person.

The Kraspedia's distant, does it make a sound?

Refers to the hostage (Cop) who's mouth is taped and cannot speak. Kraspedia(craspedia) refers to K-billy buttons, simply K-Billy, which is a fictional radio character.

The lily exposes when Chopin I play.

There is a scene in that movie in which Mr. Blonde chopping cop's ear while playing music.

The blue one is wilted; another's turned brown.

Mr Brown and Blue were getting killed in that movie.

And the title : A Fountain of Colors

Reservoir refers to source of water, a fountain in the garden.