Back Door Trim Board "fix"

I have an 08' Prius with an issue with the plastic trim on the hatch. It is the piece behind the spoiler on the inside of the car. I think the part # is 67751.

Anyway, the clips are probably broken. It doesn't stay in there, where it should. I have read that there are pink clips that hold it in place. I am considering a "fix" of getting some black metal self tapping screws with the washers on them from the auto store to secure it. What do you folks think? Any other "fix" to make this stop falling and making funny noises?

Thanks JJ