I have CVD, and I have a restricted Class 1 medical. I completed my CPL without doing the night hours and I now have a CPL with a page full of restrictions - No public transport, no night, UK airspace only, G reg only, radio required at ATC airports. This allows me to do aerial work including paid flight instruction, but of course subject to all of the restrictions listed.
I now have my FI rating, so it is possible to become an instructor despite being colour vision deficient. The CAA were very helpful throughout the process, but I have no idea what will happen after EASA. My advice would be to do it all now if you can.