How do I change the comboBox placeholder color? either for each one or for all at once

@practical-grasshopper asked this in the now-archived channel.

This should work in Vaadin 23.

frontend/themes/mytheme/styles.css:

/* For all */
vaadin-combo-box input::placeholder-shown {
  color: red;
}

/* For ones with a class name "foo" */
vaadin-combo-box.foo input::placeholder-shown {
  color: red;
}

I’ve tried adding it in my frontend/styles/button.css where I also changed e.g. vaadin-combo-box-item. the combo-box-items work but the placeholder text is still the same grey color after trying to make it red, I tried it both ways