Settle on location for putting lime, say (5,5)

'putting lime say' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.

'settle on location' is the wordplay.
'settle on' becomes 'light' (light can mean to land or come down).
'location' becomes 'green' (green is a kind of location).
'light'+'green'='LIGHT-GREEN'

'for' acts as a link.