Some fascinating technical and commercial insight from Songfacts:

‘Trouble’ was recorded four times before the band achieved a take they were happy with.

Speaking to Sound on Sound magazine, the song's producer, Ken Nelson, explained the arduous process behind the Parachutes cut:

“The backing track was recorded, and then each time, we'd add to it to see if it was working. But we decided on the first three versions that it wasn't really happening.

For the last one, we got Pro Tools in, and it was recorded into Pro Tools with a shaker providing the rhythm. Will played drums, and Chris played piano in the little wooden room, and that was the backing track. The bass went down quite quickly, and then Johnny did his guitars."

Sly Stallone asked Coldplay if he could use the song in his movie ‘Driven’, but the band declined.

That same year (2001), the quartet also turned down a multimillion offer from Coca-Cola to use the song in a television commercial for Diet Coke.

Chords

Intro
2nd string/open (hammer-on to…)
2nd string/1st fret
3rd string/open

C

2nd string/open (hammer-on to…)
2nd string/1st fret
3rd string/open

Am

2nd string/open (hammer-on to…)
2nd string/1st fret
3rd string/open

Em (can then go to Em7: 0-2-0-0-0-0)

2nd string/3rd fret (hammer-on to…)
2nd string/1st fret
2nd string/open

C (can go to CaddG: x-3-2-0-1-3)

2nd string/open (hammer-on to…)
2nd string/1st fret
3rd string/open

Am (can go to C6 x-0-2-0-1-3)

2nd string/open (hammer-on to…)
2nd string/1st fret
3rd string/open

Em (hold the chord on the last time)

(x4)

Verse
C
Am7 (x-0-2-0-1-0)
Em

Bb (x-1-3-3-3-x)
Dm (x-x-0-2-3-1)
C

(x2)

…then back into intro arrangement.

Chorus
D
C6 (x-0-2-0-1-3)
D
Am

(x2)

…then back into intro arrangement.

Bridge/Outro
I haven’t included the slight change (‘They spun a web for me’). However, it’s very easy. The chords are the same the verse but slower:
C
Am
Em

…and repeat.

:0)