High idle could be a number of things, not necessarily injectors

-Air leak
-Faulty ISCV
-Faulty TPS
and probably more...

You can't just go swapping injectors, greens and greys are not better than yellows... they flow more fuel, so are only useable with a suitable chip.
If you use greens with a stg1 chip, you will overfuel and end up with borewash.

If your car is stage 1, stick to yellows, greens are stage 3.

If you are unsure about all the above, try and find a specialist local to you.

Hope this helps and good luck.