I wasn't too satisfied with the other tablature for this song so I thought I would give 
a wack. First tab ever!!

INTRO

|-15/17--15-------------------|-------------|
|-----------17-17-17-15-------|---------15--|
|-----------------------14/16-|-16-16p14----|
|-----------------------------|-------------|
|-----------------------------|-------------|
|-----------------------------|-------------|
             x3
V1 And I'm not.....

|-15---15---15----------------|
|---17---17---17--15----------|
|-------------------16--------|
|-----------------------------|
|-----------------------------|
|-----------------------------|

V2 And I was your silver lining....

|-15------------------|-15-------------------|-------------------|
|---15-----17---------|---15--15--17---------|----------------15-|
|-----16-----16-------|-----16------16-------|-16--------14-16---|
|-------h17-----17-14-|---------------17-14--|---17-14-17--------|
|---------------------|----------------------|-------------------|
|---------------------|----------------------|-------------------|
                                x2

CHORUS (hooray hooray..)

|-191919-14--16/17-15-|-191919-14--16/17--14--16/17-14-|
|---------------------|--------------------------------|
|---------------------|--------------------------------| x2
|---------------------|--------------------------------|
|---------------------|--------------------------------|
|---------------------|--------------------------------|
           x2

Fill
|--------------------------|
|-------------14/15--------|
|-15/16--16/17------17-16--|
|--------------------------|
|--------------------------|
|--------------------------|

Repeat V2 then CHORUS + the first part just once more
then the CHORUS again but this time when repeating the fist part the second time do this:

|-202020-17-15--| we'll call this version 2

then finish out the chorus

For V3 (And the grass..) there is no lead but there is a triangle being played. You can 
that sound by picking the high E just beyond the nut (just in front of the tuning key)

Then Repeat V2 into CHORUS which you repeat twice and then verion 2
The end is just variation of the CHORUS

Enjoy