Changing color via Hex doesn't count as an action, so save does not update file
with an Illustrator file open, if you change the color of a piece of artwork via typing (or pasting) a Hex color number in the color palette, it doesn't count that change as a "change" so if you hit save, the file won't save and update because the application isn't logging the change. Same goes for undo, it won't undo the color change it will skip back to the last change made before the color Hex adjust. Conversely, color adjustment via any other way (click a swatch, eyedropper, rgb/cmyk sliders, etc.) DO record the color change, it will show up as "Undo Color" and an immediate save after color change updates the saved file. Asking that keyed Hex or pasted Hex color be added to history triggers.
I constantly use Smart Objects in Photoshop and while a color overlay in PS is an in-app way to change all the color of the object often after to open the object back in Illustrator to adjust the art and/or color. Sometimes I forget that pasting a Hex from Photoshop to the Illustrator file will not commit the color when I hit Save and close the Smart Object (in photoshop it remains unchanged) so have to use some work around after pasting color, like a copy paste delete of art so that the program registers that other things have changed even though put back.
