Why am I unable to color my volumetric clouds white? I am trying to render a cover of white clouds as seen from above. I am using the Principled Volume shader, using gradient and noise textures. It now looks as follows:

However, the clouds are very dark (even though I set the color to white), and I don't know how to change this. I put a purple sun light with maximum strength right above, but it only colors some contours. I've also tried HDR environment maps. How can I get the clouds to be white, just like real life clouds on a sunny day?
After replicating your node network I found reducing the anisitropy value on the principled volume node makes the clouds whiter