Adjustable light bulbs

I was today years old when I discovered that there are adjustable light bulbs. Had to replace some of the bulbs in several ceiling cans. Got to Target without checking what type of bulbs (warm vs. cool) were in the other cans, and discovered that now you can buy multipurpose bulbs and then adjust them at home. The older I get the more I find myself echoing my 97-year old late mother's phrase of…