

Allows the player to change the color, health, health regeneration, the ghost's lifetime and ability to summon multiple of them.
The settings are found in the Outward Config Manager (F5-key to open the configuration interface when in-game). You will have to restart the game for the change to be applied. The interface looks like the following:

You can change/toggle the following settings of the ghosts:
Example of multiple ghosts:

When doing the quest called Questions and Corruption for the Holy Mission Faction, having multiple ghosts will stop the green ghosts from summoning in the Corrupted Tombs and progressing the quest. I have made a patch to address this (which kills the ghosts at this point in the quest) and displays the following message on screen:
"Summoned ghosts won't work with this part of the quest. Please refrain from using them against the next fight inside this dungeon."
Do not worry if you don't follow this advice and get temporarily stuck. You can fix it by going to the menu and the going back into the game.

Invisible Ghost: Alpha = 0
Golden Ghost: Alpha = 1, Red = 4, Green = 2, Blue= 1

You can make the ghost any color you want except for black (as far as I know), because black is coded as transparent :)
Alpha: 1
Blue: 4
Green: 1.5635
Red: 1.3235
Health: 110
Health Regeneration: 0
Lifetime: 280.0