I’ve only ever bought the Color tone clear from stewmac, and that was to do a headstock with a waterslide. I live in the southeast as well and had to wait a few days for the humidity to be lower than 65%. When it was above i risked it by going into the garage, which stays closed most of the time and sprayed the headstock in the closet so overspray wouldn’t drift onto my car. It turned out great with no problems. Using the stewmac polishing papers i sanded from 600- i think 5000 is the final grit. Then i buffed it out with sonax perfect finish and i was happy with it. I also put a few coats of color tone straw on the neck before finishing it to try and match a few 50’s strat necks i found in color. I didn’t want amber as it always looked like a spray tan to me haha. I followed the below tutorial for finishing over a waterslide decal and had no issues. I used a Rothko and Frost decal.
https://www.talkbass.com/threads/decal-application-pic-tutorial.682386/