Mixing spools of PETG-HF

This is probably a stupid question, but I’ll ask before I embark on a print.
I do not have enough black PETG-HF to complete my print, but as only the front will be visable that is not too much of a problem if I can put my grey PETG-HF spool in the same AMS position will it accept the colour change and keep printing?
Thanks for any advice.

Yes. The original spool will run out and the print will pause. You load in the ray PETG-HF and hit resume.