Theme Program TreeView/ListView/ItemsView Normal & Highlight Txt Color

There is a specific program that uses some sort of TreeView with icons for every item, branched expand/collapse next to certain items, and a button gradient square appearing when an item is highlighted. I am using a theme called U-7 Ultimate Black. There is an issue that this TreeView (or something else? TreeView TreeItem TEXTCOLOR:COLOR doesn't seem to change it) that the Normal TEXTCOLOR:COLOR is Black and the Select TEXTCOLOR:COLOR is White while the background is Black which causes unreadable text unless I select an item which causes a blue gradient box image to appear behind the text (like a button hover gradient round box image but square).
How can I reverse these text colors?

Image of issue:

Welcome to the forum.

Unfortunately there is often little that can be done about such issues. Most applications use the system colors, or have the option to do so, and they work well with custom themes and customization programs. The problems arise when applications specify their own colors. If all relevant colors are specified you have colors that don't match the theme but they are at least usable. But when only some colors are specified the combination of system and application specified colors can produce the results you are seeing.

For good or bad applications have the ultimate control over their own appearance when they choose to use it. Windows provides no facility to override application specified colors and customization programs have no influence over them.

All I can suggest is to check the applications preferences. There may be an option to use system colors or to change the problem colors.