This browser extension colorizes the transaction view when logged into the Nordea internet bank, making negative numbers red and positive numbers green.
The repository contains a Chrome extension and a Firefox add-on, both sharing the same JavaScript and CSS files. It seems like Chrome does not like symlinked files when loading code, so the originals are in the chrome folder, with the Firefox add-on symlinking to them relatively.
To add this extension to Chrome, follow these instructions, and choose the chrome folder when browsing for extensions to add.
Choose "Open file…" from the File menu, choose the file colorize-nordea-transactions.xpi and follow the instructions.
This is still a work in progress, not yet ready for public release. The extension will hopefully be distributed through the Chrome and Mozilla web stores. For more information on extension development and how to build/use this code, see the Google Chrome Extensions documentation and the Mozilla Add-on SDK Documentation.