It's a good first version. Still behind the ColorBlind - Dalton Google Chrome extension.

Missing:
1) Persistence
2) Visual preview as you select the daltonization parameters (cf. Chrome Extension)
3) Can't get Severity slider to work on FF56beta, regardless of what I do.

Thanks for providing this!

PROS:
As a colorblind individual, this extension works great for daltonizing problematic webpages! It's also given me the chance to show coworkers what webpages look like to me with the handy simulate daltonized feature. Having multiple filters is also cool to explore other forms of colorblindness!

CONS:
I really wish there were a way to persist the daltonization (effectively making a daltonized browser), since I currently have to click on the extension icon for each webpage loaded.