It's been very cold here again for most of this week, so I started thinking about a song that might assuage some of the chill, and "Walking On Sunshine" by Katrina and the Waves came to mind.
Now this is not exactly a sun-drenched video, which is a bit odd; it appears to have been shot in London on a typically foggy day. But it is an infectious song and pretty much a guaranteed mood lifter. (I've always thought "Do You Want Crying?" from the same album is a better song, but lyrically it's something of a downer.)
This song was all over the summer of 1985, which may be another reason why I've associated it mentally with warmth.