Naive Firemonkey CSS userscript to override input placeholder style to improve contrast.
Install:
- install Firemonkey from here: https://addons.mozilla.org/en-US/firefox/addon/firemonkey/
- Click on Firemonkey icon in the browser toolbar and select Options
- In the Firemonkey tab click on Import on lower left and import the CSS file
- Click on the new CSS userscript name on the left hand sidebar and check the 'enable' checkbox at the top of the window
- Refresh any tabs to load the userscript
Adjust the userscript CSS to customize.