White Sign text is not white anymore

I had built a command block shop in my realm with my friends and we use spruce signs with white text to show the prices. When the new update came out I decided to go back in and update the prices and noticed that the white on the new signs is not nearly the same as the white before. I tried every way to make the sign white like it used to be using dye and the § symbol but none of it works. I have also tested the different directions like others have said and that seems to have no effect on the color either. I waited for a few months thinking it was just a bug and I will updated it again then, but nothing has changed still and I am hoping that this will get out there so my shop can go back to looking complete and the same again.