the buttons do not lighten up when selected, or appear depressed, they will be framed by a light grey border. You need to turn on all the contrast you can get from your display to be able to see that. In the above pictures the orange, yellow, and blue buttons are selected.
Also, if I can ask two questions in one post, what is the difference at the top of the smart album search between all of the following that match or any of the following that match, does it mean it matches all or any of the criteria?
Many thanks in advance
Any of the following that match will find /include all images that match any of the rules, as the name says. So if you have a rule "color label is yellow" and "rating is *****", combined with "any", then your album will contain any images tat either have a yellow label or are rated *****.
If you combine with "all", than that narrows the search. The alum will only contain images that match both rules at the same time.