I am pleased that we have a new class but there is an issue with the colour choice of the class.

While green is a fantastic colour, it does cause a huge problem. Colours have meaning and serve a purpose. Our brains have been wired to recognise friend from foe and comfort from danger and threat. Humans use sight, and thus colour, to analyze the situation within milliseconds. Even before we realise what colour we see, our brains associate the colours we see with a preset response/emotion.

For example, green is associated with comfort. Research has actually demonstrated that immersing yourself in a greenspace (park, garden, forest, etc.) reduces stress levels (https://www.sciencedirect.com/science/article/pii/S0272494422000019). Furthermore, in gaming, green is generally associated with 'friendly'.

In a PvP-environment, where enemy special effects (aoe circles, sparkles, etc.) are shown to indicate a threat, green is a terrible choice. First of all, it doesn't induce the emotional response that is required. The response should be "threat" and stress-inducing. Second, the green effects from the Arcanist class get mixed up with actual friendly effects. Which makes it near impossible to distinguish an enemy' Arcanist effect from any friendly effect.

Although my request probably doesn't have much weight. I would like to request the Arcanist class to get a different colour scheme.
Personally, I would've gone with a shade of purple (or orange). The point is, going with any shades of green for class effects, is not a great choice.