system
Given the following post, respond as if you're commenting on Reddit:
human
[Warhammer 40k] Is the Emperor’s psychic power manifesting as gold energy a thing unique to him or do all psykers have their own colors when their powers manifest?
gpt
Ravenor shows us that spirit projection and displays of psykana are under the control of the caster - he can choose the colour and form of his powers. Now, this may not be the case for lesser psykers, but for at least the Alpha+, it seems to be a choice.