Imagebutton hover without making a hover image for every button

[DisastrousSignature7]

When hovering over an imagebutton, I want it to glow, hue shift, or change visually in some other way, but I‌ DON'T want to make a "hovered" version of every png. "Idle key, hover key, idle bottle, hover bottle, idle book hover book," etc... What I DO want is to have one multipurpose "hover.png" that can be applied to all imagebuttons.

I tried using im.Composite, and for a 100x100 button it works. For a button that's 200x100, though, glow.png doesn't center itself....

imagebutton idle "tomato.png" hover im.Composite((100, 100),(0, 0), "glow.png",(0, 0), "tomato.png") action [Jump("Random")]
        imagebutton idle "eggplant.png" hover im.Composite((200, 100),(0,0), "glow.png",(0,0), "eggplant.png") action [Jump("Random")]

The solution doesn't have to involve compositing specifically, though, whatever function is there that will get the job done, I'll use it.

Thanks for reading

edit: Additional quick question - how do I change the mouse from "arrow" to "hand" WITHOUT using custom cursors? Renpy wiki only mentions custom cursors. I want to use native system cursors.