Applying tags to multiple images in Photos

I have Photos 3.0.

Hmm… the fact that not all photos have those keywords is not clear. I can't see how pale grey is indicative of this in any way. The grey to grey, and even to the black (thanks for that comment, I can see that now, although it is a total; fudge adding the keywords again) fails basic W3C accessibility standards.

There is yet another UI anomaly: If you re-add the keyword by your method, all keywords are then back highlighted in blue. There is no functional reason for this. It further appears to indicate that all photos are keywords correctly.

When the info panel is reopened, all the keywords are, inexplicably, pale grey again.

What is the pale blue for? I can't find anything in the Photos documentation that explains this.

Thanks for this. There is familiarity With the iPhoto interface that used this method as standard in the info pane. The only issue is with the info and other panels is that they are no longer connected to the main app panel. This makes Photos very clunky on a laptop as there is not enough screen real estate to use the panels effectively. I think Photos must have been designed on, and for a very large screen! A side comment would also be that one has to now remember to open not one, but two separate panels that float around in front of the main interface. It's cumbersome in real world use moving mischievous floating panels around.

Thanks for pointing out the keywords panel though, appreciated!