That's a different song. I have the lyrics and chords from M. Ted. The lyrics are also on Melody Lane.
The Lyrics are:
I'm always chasing rainbows
Watching clouds drifting by
My schemes are just like all my dreams:
Ending in the sky.
Some fellows look to find the sunshine
I always look and find the rain
Some fellows make a winning sometimes
I never even make a gain.
I'm always chasing rainbows,
Waiting to find
A little bluebird in vain.
The chords are: