What is the answer to this riddle?

 

Riddle:

I am a daily dance, a fiery embrace, A sky ablaze, a canvas painted in grace. I paint the clouds with hues of gold, And kiss the horizon with my final fold.

What am I?

Hints:

• I happen every day.
• I am a beautiful sight.
• I mark the end of the day.
• I am a natural phenomenon.