Fix GHS hazard icons in dark mode
The new hazard pictogram artwork was hard to see in dark mode - the black parts of the symbol blended into the dark background. They now show in white instead, without adding a bright white box around them.
The new hazard pictogram artwork was hard to see in dark mode - the black parts of the symbol blended into the dark background. They now show in white instead, without adding a bright white box around them.