I seriously thought the new lock indicator was a bug (the extension failed to load the orange lock icon or something.) My eyes are not what they used to be. I could definitely see myself confusing the new icon with the site count indicator as they are less contrasting now.
When the vault is locked, the browser extension icon now has a padlock in the bottom corner, black with a white border. This isn’t very high contrast and it’s hard to see at a glance what it is and what it means. The old way, with a red dot in the corner, was much easier to notice quickly. I would like to see this change reverted, or some change to the padlocks shape and colour to make it as easily noticeable as the red dot.
I don’t fully agree with all others, but I do support having this be a user preference! I like both, but would likely use the red/green indicators myself.
I gather the change suits colorblind users better, but agree the tiny padlock badge isn’t ideal. Would recommend instead changing the icon appearance itself – e.g., some suggestions:
Make the BitWarden shield black (or better, dark-gray) on a white BG when locked, which changes to the white shield on blue BG when unlocked (here the b/w inversion suits colorblind users); …or…
Make the BitWarden shield itself the body of a padlock, with a shackle on top that’s open when the vault is unlocked, closed when locked.