New answers tagged ui
I've been looking into this for awhile myself. Mike Bombich been able to do it for years with his Bootpicker app. And this developer is able to tap into running a GUI app as soon as the user clicks on a login icon: https://github.com/grahamgilbert/crypt (can't tell from his screenshot, but look up his OS X Management with Puppet presentation).
And if you have a MacBook Pro since the NumLock has disappeared from F6 and it seems there's no alternative you may opt for the freeware KeyRemap4MacBook https://pqrs.org/macosx/keyremap4macbook/
The "clear" key is used to clear simultaneously the contents of all selected cells in Microsoft Excel. This allows the user to clear more than one cell at a time, which is what the "delete" key is limited to. This function of the "clear" key is essential for work with spreadsheets.
All the problem (except the 4th one -- Adobe Acrobat) disappeared recently without me doing anything specific. At first all buttons except the colored default button are replaced with new button styles, and then the default buttons are fixed some hours later. Note that an upgrade to Mavericks does NOT solve the issues, nor any restarts or permission repairs ...
You might also look into using flux as that can be an easy tool to modify the color / contrast of the screen. I use it to change to softer lighting at night but there is no reason you can't set it to be different all the time.
Top 50 recent answers are included