How to Solve a Bomb

If the wire is red, cut the wire.
If the wire <n> is blue, look at the above wire <n-1>.
----If the wire <n-1> is red, don’t cut the wire <n>.
----Else, cut the wire <n>.
A wire with multiple colours is considered all of those colours.
If the wire <n> is green, don’t cut the wire. Look at the wire below <n+1>.
----If the wire below <n+1> is normally cut, DON’T CUT the wire below<n+1>.
----Else, cut the wire below <n+1>.
Else, don't cut the wire.

Ok so each color rule is still only forcing you to refer to one wire out. This makes things appreciably less confusing.