Guitar Chords: Give Me Some Sunshine, 3 Idiots

All those of you who are starting to learn guitar and want to practice a simple song like Papa Kehte Hai should rejoice! For this song is based on C major scale with simple C, F and G chords. Still, you should be comfortable with changing chords as changing from C to G is considered to be toughest among the basic open chords. This guide should be useful for the same: 6 Tips on Changing Guitar Chords Effectively.
Give Me Some Sunshine is a beautiful college song which is already a hit amongst youngsters. The song is really pleasing on the ears and once you hear it, you will want to hear it again and again. From the guitarists perspective there are two important things to note here: Firstly, the strumming pattern (given below) is simple for experienced guitarists but might take little practice for novices. Secondly, the chords are regular C, F and G chords but at some places it is advisable to play the barre version rather than normal one. I have mentioned it below.
Also worth noting is how the regular old C, F and G chords have been creatively improvised to derive this wonderful song. A clear reminder that with little improvisation gives a completely different touch to the music.
Here are the strumming patterns used in the song:

Strumming Pattern 1	Strumming Pattern 2
| 1 & 2 & | 3 & 4 & | | D - D - | D D U D |	| 1 & 2 & | 3e&a4 & | | D U D - | DUDU- D |

To understand above strumming pattern, check this lesson:
The Art Of Guitar Strumming

Chords used in the song:
C 032010
F 033211
Fbar 133211
G 320033
Gbar 355433
Sari umra hum mar-mar ke jee liye…
Ek pal to ab hume jeene do… jeene do…(Slide 7\3 on 5th string)

| C F | C F | C F | C G |
| C F | C F | C F | C G | (WITH BEATS)

The F & G chords above should be struck only at the last stroke. – Thanx to Navneet
Strumming 1
(C)Sari umra (G)hum, mar-(C)mar ke jee li(G)ye
Ek (C)pal to ab hu(G)me jee(F)ne do, jeene (G)do…
(C)Sari umra (G)hum, mar-(C)mar ke jee li(G)ye
Ek (C)pal to ab hu(G)me jee(Fbar)ne do, jeene (Gbar)do…
Strumming 1
(C)Na na na-na(G)… na-na (C)na na na-na(G)
(C)Na na na-na(G)… na na (Fbar)na na na na-(Gbar)naaa..
Strumming 2
(C)Give me some (G)sunshine
(C)Give me some (G)rain
(C)Give me (G)another chance
i wanna (Fbar)grow up once a(Gbar)gain… x2
Strumming 1
(C) …
(F)Kandho ko (C)kitabo ke bojh ne jhukaya(F)
Rishwat(C) dena to khud papa ne sikhaya(F)
(C)99% marks (F)laoge to (G)ghadi, (C)warna chadi (F)
(C)likh-likh kar padha (F)hateli par
aplha, (C)beta, gamma ka(F) chala
(C)conc. H2SO4(F) ne pura, (C)pura bach(F)pan jala dala(G)
Strumming 1
(C)bachpan to ga(G)ya, ja(C)wani bhi ga(G)yi
ek (C)pal to ab hu(G)me jee(Fbar)ne do jeene (Gbar)do
Chorus
(C)bachpan to ga(G)ya, ja(C)wani bhi ga(G)yi
ek (C)pal to ab hu(G)me jee(Fbar)ne do jeene (Gbar)do oooooo
Melody (Piano)

E ----------------------------------------
B -13-13-10-11---11-10-13-13-10-11--------
G ----------------------------------------
D ----------------------------------------
A ----------------------------------------
E ----------------------------------------

E ----------------------------------------
B --11h13-13-10-11---11-10-13-12-13-13----
G -------------------------------------14-
D ----------------------------------------
A ----------------------------------------
E ----------------------------------------

(C)Sari umra (G)hum, mar-(C)mar ke jee li(G)ye
Ek (C)pal to ab hu(G)me jee(Fbar)ne do, jeene (Gbar)do…
(C)Na na na-na(G)… na-na (C)na na na-na(G)
(C)Na na na-na(G)… na na (Fbar)na na na na-(Gbar)naaa..
(C)Give me some (G)sunshine
(C)Give me some (G)rain
(C)Give me (G)another chance
i wanna (F)grow up once a(G)gain… x2
{No strumming}
Na na na-na… na-na na na na-na
Na na na-na… na na na na na na-naaa..
{Strumming}
(C)Na na na-na(G)… na-na (C)na na na-na(G)
(C)Na na na-na(G)… na na (F)na na na na-(G)naaa..