I thought it may be helpful to not only identify the extended chords I used, but also to show the color notes in red for the Basic Extended Chord Arrangement and the Improvisation for All the Things You Are.
The color notes shown are 7ths, 9ths, and in some cases11ths, and 13ths. The few notes you see in red are the color notes that add tension, dissonance, and a unique jazz sound. If you compare this with the basic left hand accompaniment in the previous post, you can see how a few well-voiced color notes really make a difference. It is interesting to note that in many cases the colored note is also the melody note.
Below is the basic extended chord arrangement with the color notes of the extended chords shown in red.
I've also shown the colored notes on my improvisation of All the Things You Are. If you take away or eliminate the colored notes you lose cohesiveness in the hook. Something just feels missing. Here again, you can see how it only takes a few color notes to make a big difference.
In some cases I have made it more complicated by trying to identify a chord, where the notes are really simply passing tones or neighbor tones.
Here is my improvisation with the color notes of the extended chords or phrases shown in red.