There is a time for everything, and a season for every activity under the Heavens:
Verses 2 through 8 continue to list a few examples of more specific activities that happen at specific times. If there were more examples, autumn foliar color would probably be cited as well. After all, autumn foliar color happens in . . . well, . . . autumn.
Perhaps it was omitted for brevity. Of course, there is the possibility that it was omitted to avoid confusion. If it had been cited, it might have been described simply as ‘foliar color’ rather than ‘autumn foliar color’. Some foliage colors earlier if distressed. Some foliage does not color until frosted. Some might even delay color until it is in the process of getting replaced by new foliage. Then there are the many sorts of evergreen foliage that do not color at all, or at least in a manner that is visible or notable from outside. Shedding browned or blackened dead foliage, particularly that which is obscured by new foliage, does not count.
This English ivy foliage is the sort that should not color at all. Old leaves should whither and deteriorate once obscured by new foliage. Perhaps the vine is concentrating resources elsewhere while abandoning this section. Perhaps the entire vine is deteriorating. From this picture, it is impossible to determine why this colorful foliage is exposed.
Perhaps this is the time to just appreciate nice autumn foliar color wherever and whenever we get it, even if it is on English ivy in winter. As the flowering cherries try to convince us that it is spring, that would be just fine too. This can be the time for autumn, spring, and maybe even winter if it ever arrives, all at the same time.