[lirena00]

it takes a bit of time to put filters over website so it is normal to have that but I will see what I can do with it

and

androids do usually have a greyscale mode on the devices preinstalled, I can work around a bit to make it compatible with firefox android as well but I think an app is what you are looking for? greyscaling particular apps right?

[wodniok]

Your plugin for Firefox Android would be great.

Greyscale mode is an option I'm using right now.

[lirena00]

that's great to hear, next release will be focused on this too then :)