Instead of repeating activate approach checking at the bottom of speed tape v app and confirming approach activated is the new change in AB SOP and it will always appear in managed speed. Managed or select speed are sure appropriate calls but as long as you do so after checking appropriate colour because otherwise it has'n happened.
Same reply - Vapp in magenta won't necessarily appear as it is not necessarily what you're looking for by activating the approach phase.
The approach phase can be active, whatever the color on the speed tape.