In what year was the album “Colors” released by miss A?

In what year was the album “Colors” released by miss A?: The album “Colors” was released in 2015 by miss A, featuring 6 tracks.
What is the most successful song from the album “Colors” by miss A?: “Only You (다른 남자 말고 너)” is the biggest hit from the album “Colors” by miss A.

Other artists of K-Pop