I have my capo on 2 = key of A

[Verse]
G                  Bm
Red and yellow and pink and green
C          G         Am   D
Orange and purple and blue
G            C       G      Cm
I can sing a rainbow sing a rainbow
G      D       G
Sing a rainbow too

[Bridge]
C                G
Listen with your eyes
C                G
Listen with your eyes
    C         Cm        G
And sing everything you see
A              D       A      D
You can sing a rainbow sing a rainbow
A               D7sus4 D
Sing along with me

[Verse]
G                  Bm
Red and yellow and pink and green
C          G          Am  D
Orange and purple and blue
G            C       G      Cm
I can sing a rainbow sing a rainbow
G      D       G
Sing a rainbow too

来源：www.ultimate-guitar.com