I think there is more highlighting in the Characters/Skills menu than it is needed. There can be up to 4 highlighted icons in at a time and it is very confusing. The rules for the highlighting are confusing too.
1. Currently chosen character is highlighted - it is OK
2. Currently chosen active skill is highlighted - it is OK
3. An active skill is selected but there is always also one passive skill highlighted - I don't know why the passive skill is also highlighted and why the first one can be never highlighted when I choose it
4. There is one active and one passive skill highlighted, but the selected skill is not highlighted - I don't know why
5. If I hover an icon, the skill is highlighted - this won't help the complicated system of highlighting. I think it is not needed because it just add another confusing highlighting.
If it is possible, I suggest to use highlighting for two icons - selected character and selected skill. You can highlight the hovered icons too, but not so aggressively with a border.
1. Currently chosen character is highlighted - it is OK
2. Currently chosen active skill is highlighted - it is OK
3. An active skill is selected but there is always also one passive skill highlighted - I don't know why the passive skill is also highlighted and why the first one can be never highlighted when I choose it
4. There is one active and one passive skill highlighted, but the selected skill is not highlighted - I don't know why
5. If I hover an icon, the skill is highlighted - this won't help the complicated system of highlighting. I think it is not needed because it just add another confusing highlighting.
If it is possible, I suggest to use highlighting for two icons - selected character and selected skill. You can highlight the hovered icons too, but not so aggressively with a border.