Head to Hardware Town and find paint. To get green paint, the correct shade, you need to acquire a can of blue and a can of yellow paint, then mix it in the paint mixer found at the back of the building, in the warehouse.
Return to Abbot
Apply paint to the Wall
Quest stages[]
Stage
Status
Header
Description
10
Search the Hardware Store for Paint
Abbot in Diamond City wants me to find paint for the city's Wall. There's a place called Hardware Town where I can start looking.
20
Return to Abbot
I've found some paint. Time to go back to Diamond City and collect my reward.
30
(Optional) Mix a batch of Green Paint
I've managed to mix a can of Green Paint, the same color as the Wall in Diamond City. Abbot will be happy about this.
40
Apply a paint to the Wall
Abbot in Diamond City wants me to show him what kind of paint I've found by applying some to the Wall.
50
Talk to Abbot
100
I've painted a spot on the Wall. Time to talk to Abbot about my reward. (Wall painted green)
110
I've painted a spot on the Wall. Time to talk to Abbot about my reward. (Wall painted blue)
120
I've painted a spot on the Wall. Time to talk to Abbot about my reward. (Wall painted yellow)
200
Quest finished
I helped Abbot find some new paint for Diamond City's Wall.
500
Quest failed
Abbot is dead. Whatever reward he would've given me for retrieving paint for the Wall is gone with him.