#Change wire colour after placing
4 messages · Page 1 of 1 (latest)
You can use CTRL-F to colour an existing wire segment, or CTRL-E to colour all connected segments. CTRL-R is a colour picker. Also available are colour hotkeys 1-9.
Colours are unlocked fairly early in the campaign - not sure where you are atm.
I'm pretty sure colors are just always available unless something's been changed fairly recently