I've spent the past few days of the time I allocated to work on the game, and will be spending a few more, replacing all the icons in the game. Here's a look at some of the skill icons on Feron's skills so people can compare them with the version they have now. These aren't finalized as I may change a few, but they're all from the new icon set.
As you can tell these match the intended style of the game a lot better as GBA games generally had the square icons with distinct visuals. Originally I went with the icon set I did because the one that came with MV, while being the right style, was incredibly limited. The set I found and released the game with was large enough that it covered a lot of different options and had a close enough style that it worked, but after a while it became obvious that it was also limited in various ways and I was reusing icons for things that I really shouldn't have. Skill icons and status effect icons in particular need to have variety so you can tell at a glance what each one is and having to double up like I was created some issues. The new set is massive and easily allows for a lot of variety in not only skill and status icons but all the various items as well so it works a lot better.
Not every character has the various colors like Feron got. As an example, Sarrina has a lot of yellow background icons for her light based skills. I'm still tweaking some skill icons to make sure I find the ones I want, and I'm not finished with replacing all the item icons along with all the icons hiding in various menus, but I wanted to get it done and out of the way before I got too far along to avoid having to replace them when I have far more things to pick through and update.