I could not find a solution BUT there is a logical hack to this.
It seems that if you take a scale of a color, the more dark it is chrome font will be white, the more lighter it will be black.
for example lets say you wish to have theme color of blue
if you set this “dark” blue color:
<meta name="theme-color" content="#2b6cb0">
the font color will be white
or this “light” blue
<meta name="theme-color" content="#4299e1">
the font will be black.
so to conclude, take the color you choose and change a bit to darker slightly and put it in the theme-color and see when it changes to white.
hope this helped.