I had a coolant leak at my upper radiator hose. I went to remove the hose, and ended up with half of the radiator plastic behind it. I have now removed the fan as per the related posts.
My question is relating to the banjo bolt at the lower right side (from the front of the car) which holds 2 high pressure lines.
When I unscrew the bolt, I get an enormous amount of spray shooting out, which appears to be a very gaseous and bubbly lime green mix.
Is this normal when being unscrewed?
Everything else in the post has been perfect to follow.

 

You appear to have disconnected the air conditioning condenser - the smaller heat exchanger in front of the radiator. You will need to get the system pumped down and recharged after the radiator is replaced.