If I could catch a rainbow

If I could catch a rainbow
I would do it just for you
and share with you its beauty
On the days you're feeling blue.

If I could build a mountain
You could call your very own
A place to find serenity,
A place to be alone.

If I could take your troubles
I would toss them in the sea,
But all these things
I'm finding are impossible for me.

I cannot build a mountain
Or catch a rainbow fair,
But let me be what I know best,
A friend who's always there.