|You shouldn't have a "pinky color" at all at any time.|
It's likely that
- you have wear caused damaged wiring between the video adapter and the display
- and/or your backlight is in the beggining stages of failing
- and/or the display assembly in the lid is damaged - if the symptoms change when you merely flex the lid
Laptop no video (or video problems), and battery, AC adapter, power jack T shooting.
See response 1:
DO NOT plug in or unplug a monitor's video cable into / from a video port while the computer is running. Doing so can damage the monitor's circuits and/or the video adapter's circuits.
Some laptops will display on an external monitor without you having to do anything.
If you get no video on an external monitor, some laptops have a key combo that you must press to toggle the display to external video only / built in display video only / sometimes both - see the Owner's or User's manual for the model.