Premier pro graphics white text showing in grey color for a particular video

Hello,

I am using Premier pro-2022. I am attaching two pictures here, bot was shooted with iPhone in different lighting. When I am adding a white color text graphic to video 2 it's showing properly. But at the same time I am adding the same white color text graphic to video 1 it's showing in gey color. How can I fix this? Please help.