Why?

Wormhole: 

J-System:  J

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You can in most cases easily identify the class of WH system on the other side of K162 hole by its color. Each WH class has its own distinct sky color, and you can see this color through the hole center, if you look closely. And halo color also helps in identifying the hole max ship size.

C1 Halo colour is cyan, that means the hole is medium ship sized; that definitely points to holes that lead to (or from) C1. From inside C1 all holes are like that.	C2 Center is dark gray + brown combintaion.	C3 Center color is dark gray + slight cyan combination.
C4 Halo is like C3, but with light purple tint; center is darker, maroon / dark purple. You can see more purple colors here.	C5 Center has strong red + black color combination.	C6 Bright orange color definitely points to C6. You cannot make mistakes here.
Pochven region You can see red Triglav space through it.