ColorSync Utility

I was trying to see if I could use ColorSync Utility to change the color of a logo that is a PNG file. In the process, I was unsuccessful in changing the color (I now understand that's not what this does) but now the whole image seems....darker? The actual file is fine. So, I think I just changed the display settings, but now when I open the file, the background appears almost gray instead of white. How do I fix this?! The image on the left is what I see now; the image on the right is what it looked like originally.