Question: How can I make the items in my FMX `TListBox` bold? I can't find anything by myself, either in the documentation or the Internet.

Answer: 
You need to set two properties for the tListItem in question. The first line of code below lets you set the font properties for that ListItem rather than having the style dictate the font properties (if you miss this step, the next step will have no affect). The second line sets that ListItem to bold (where, of course, x is the index within the list that should be made bold)

```
ListBox1.ListItems[x].StyledSettings:=[];
ListBox1.ListItems[x].Font.Style:=[TFontStyle.fsBold];

```
You can use custom theme for TListBoxItems. Create one by right mouse on ListBox.