It's written in A. I might have made a few mistakes- if you've got a correction 
let me know! No capo needed, standard tuning and standard chord voicings. As for 
strumming pattern anything like //\\/\ or something bouncy like that would work.  
Great song- hope you like it =)

Top of the World: Colorsound

Intro:
(x2)
A            D
Do dum ba da da
F#m             E        A
do sum ba da da da

Verse 1:
A                  D
I can't feel better 
               E         F#m
than the way I do
   A                D                  E               F#m
every thing's fine I'm so in love with you
A                          D
they all think I'm crazy
          E               F#m
but I know I'm right
 A               D                         E              F#m
now I dont see the world in black and white

Chorus: 
                   A              D       
and it feel so good, so good,
           F#m               E
when you're by my side
                   A                  D
and it feels so good, so good,
             F#m              E
that I can't sleep at night
              F#m        D
I think I fell in love
 F#m       E
do do do do
                     A              D
and it feels so good, so good,
F#m            E
with you I feel
                        A
on top of the world

A    D   F#m
daaaa 
E                       A
bo dum ba da da
A    D   F#m
Daaaa
 E                       A
(bo dum da da da)

Verse 2:
Since I seen her face 
I can't look away
And now I know I'm better off this way
I can feel the city singing in the night
when everyone's asleep and out of sight

*Chorus*

Bridge:
          A                              F#m
My heart keeps burning, baby burn
           D                  E
But I can't let you go
          A                                F#m
My heart keeps burning, baby burn
             D                   E
And I want you to know
F#m                          D
Minutes feel like hours
                              F#m                   D
when you're not there it's getting harder
 
                          E
 to let it go (ohhh)

*Chorus*

*Intro*