Default icon color in Dashboard 2

I have a problem with the color of default icons in the text input node.
The text color switches automatically between white and black, dependend on the background color of the theme. Fine!
However the color of the icons remains black. Is there a way to synchronize the icon color with the text color?

I opened an issue: Default icon color in text input nodes · Issue #24 · FlowFuse/node-red-dashboard-2-ui-example · GitHub