App Icon Not Correct

I’ve looked at several guides nothing has worked. I want to know how to change the icon. ​Epiphany has probably the worst icon to date. An anything even its current one with no black bars on the corners.
image

I wanted to try a different browser since FF an its alts are letting me down. But after the struggle to just get the theme to match lat alone light/dark mode. I still cant recommend flatpaks.

Yes I could install the main pkg since i run kde arch but i dont want gtk really anywhere near my system directly if i can help it.

I guess your system isn’t handling png or svg correctly for whatever reason, that should be transparent.