As always, this is transcribed, verified and corrected by my own ear.

Intro: 6/8
|Dm   Dm7 |   Dm  | Dm7  |  Dm  |

Dm     Dm7    Bb    Gsus/D    G/D  
Rivers flow uphill
Dm              Bb  Gsus/D    G/D 
Blue turns into grey
Dm     Dm7     Bb
Winter follows springtime
F                G
Morning ends the day
Bb           Bbmaj9  Bb6 Dm7  
  Beyond the sil  -  ver rainbow 

(rythm is D, D(bass) F chord "A inversion" - gives the Dm7 quality)
(then D, D(bass), F then C chord, "G inversion"   Use for verse   ) 

|Dm  |Dm   |Dm   |Bb  Am |Dm7  |Dm7  |     

Dm7
If you're walking home beside her
and you know what time it is
          Bb    Am      Bb      F/A      Dm7   
and if you avoid the puddles in your way
You haven't been there either
Eb/F                 Bb/F
To the land that lies
F/G                       G
Beyond the silver rainbow
Dm7
But if you're walking home beside her
and the sun should turn to blue
        Bb                       Ab
and you keep on going cos you're unaware
B                              D/A, G/A, A, Asus4 A, G/B  
Ooh then you know that you are there
G/B               Bb                         D/A G/A    A  Asus A G/B
Beyond the silver rainbow (beyond the silver rainbow you   won't  know)
G/B                      Bb            Bb
You won't know if you're coming or going...

(Synth notes in parentheses)
|Bb    Gm  |Am     | Dm7   |---> Back to verse 
(F E D Bb G|G   F E| D     )

Dm7
Ooh if you're sitting there beside her
With your arms you hold her close
           Bb             Am      Bb         F/A    Dm7
and you're wondering just how far she'll let you go
You haven't been there either
Eb/F                 Bb/F 
To the land that lies
F/G                        G
Beyond the silver rainbow

Dm7
But if you're sitting there beside her
and a bear comes in the room
        Bb                       Ab
and you keep on going cos you're unaware
B                              D/A G/A A,  Asus A, G/B
Ooh then you know that you are there
G/B               Bb                         D/A G/A A,  Asus A,  G/B 
Beyond the silver rainbow (beyond the silver rainbow   you won't know)

G/B                      Bb                D/A G/A A, Asus A, G/B ..to fade
You won't know if you're coming or going...