Interesting. I had never heard of synesthesia before so I just looked it up.
It's probably not the same, but when I posted Island In The Sun I realised afterwards I wasn't quite sure if it was yellow or blue, or both. I guess what you are talking about is much more complex.
Strange thing though is that when reading about conceptual synesthesia I became aware for the first time that for me the number 7 is green, in a shade darker and more leaning towards olive green than Spotify green.
With a nod to classical music, my first "yellow" thought is
The color yellow is a bit odd. When I think of that color I don't get a defined feeling, but more like 'here I am, feeling empty.' Therefor I think jazz does it's job. spotify:track:32zna5FLT8EQboEzpWzV76 #ffe58f
The new Bahari track Dancing on the Sun was extremely visual for me the first time I heard it. Sounds like flower crowns!
Obviously, the title and album art bring to mind a very beachy theme. But more so, the driving bass line layered with the organ and shakey tambourine in the rhythm section sounds very mid 90's pop, which in color form reminds me of yellow! Like New Radicals - Maybe You've Been Brainwashed Too yellow. I've pulled the hex code for the two shades that appear on that cover that show what came to mind!