Looks like YUI-san also likes green. :)
Watch the PV here.
The tracklist is as below:
1. Green a.live 2. Let's face it 3. HELLO 〜YUI Acoustic Version〜 4. Green a.live 〜Instrumental〜
It's quite a sorrowful song. Anyway I like both the PV and song. The lyrics cover variety of topics, it seems.
Oh support the artist by buying the original CD! You can order from cdjapan.