Some weather status icons (ex: overcast clouds, rain drops) do not contrast well with some background colors

[nekohayo]

If you turn off the colored backgrounds (for better contrast/readability etc.) the white part of the clouds is barely visible for someone with good eyesight, so they will be invisible to someone with bad eyesight:

Short of using symbolics, maybe those icons could benefit from some sort of dropshadow or border?

The icons might need to have specific light and dark variants too, because some elements are conversely hard to see in dark mode. For example, the raindrops here are difficult to notice as they are tiny and dark-blue… if I sit 60cm from my monitor, I literally cannot see them: