Request- Leaves on trees in fall don't go away

In fall, the trees gradually progress from green, to red/orange, to bare.

I'd like to see a mod that stops the progress to bare, or makes it wait until like, the very last day.

I'm not sure how the game handles this process but I know mods to make seasons longer exist and the process adjusts automatically, so I imagine it's determined by a percentage or range modifier somewhere.

I thought I found it- under the seasons tuning, there's settings for "Early" and "Late". I set "late" to 1 day and "early" to all the other days, but that didn't change anything about the visuals. If it changed anything I don't know what it changed.