I don't know if anyone else still plays this game, but I just rediscovered this game and spent a bunch of time making it more to my liking, and I figured I'd put it on here just in case anyone else might want to play it.

It's a very specific set of tastes, I made a lot of the background mostly greyscale, with some of the decorations and all of the people/plants/tools unchanged, as well as red accents everywhere. I made the water from the watering can as well as in the fountain red as well. See the screenshots for a better idea. In the Nursery shot it shows my customized player, which I didn't include in the file, so it will remain default. I blanked out the plant discovery page because of possible spoilers. 

Anyway if you want it just unzip the file in the main directory of your game install location after backing yours up in case you don't like it.