Of course, the problem with these profiles is that most of them turn blues really, really purple. The problem is that the "blue" on these profiles is so far from sRGB blue that the transform introduces a lot of red. If you want to really see it, switch the display profile first, and then open up a color picker and set it to pure blue. It'll be purple under most of these profiles.
An easy way to get a color picker is with TextEdit. Open it and press ⌘⇧C, then click the second tab on the color picker. Choose RGB sliders (⌘2) and crank up the blue (the bottom one) all the way, while lowering the other two. With the MBP200815 Native, for example, it'll be quite purple. Quit TextEdit, change back to the default Color LCD profile, and try it again. It'll be blue.
That's not a big deal for some people, but it's always really bothered me to have such inaccurate blues.
An easy way to get a color picker is with TextEdit. Open it and press ⌘⇧C, then click the second tab on the color picker. Choose RGB sliders (⌘2) and crank up the blue (the bottom one) all the way, while lowering the other two. With the MBP200815 Native, for example, it'll be quite purple. Quit TextEdit, change back to the default Color LCD profile, and try it again. It'll be blue.
That's not a big deal for some people, but it's always really bothered me to have such inaccurate blues.