Hey Doug
At the ceiling joint…..I’ve stopped using the matching grout caulk for that. I’ve found it looks better to just caulk with a siliconized latex caulk and paint it with the ceiling. I’ve never had great luck with caulking that with a colored caulk and look that great. That being said, my joints at ceiling are 1/16″ or less, so it might depend on the size you have
