Trim path animation is moving my gradient

Hi Community.

I have applied a gradient to my animating circle using trim path animation.

The gradient has 4 colours, the 2 middle ones are exactly at 50% so they dont cause a smooth transition, I wanted a hard gradient stop, thats why they're at 50%.

When the animation starts, instead of seeing just blue to green, I can see some transitioning gradient happening in between the colours. 

Also, is there anyway of converting a PSD file into a Path, so I can apply trim paths?

Thank you.

https://streamable.com/qifwid