I do not think it is possible (unless you use some 3rd party extension of Inno Setup). It's the same as here: [Inno Setup - Change a task description label's color and have a line break](https://stackoverflow.com/q/35817280/850848). My answer says: *"I'm pretty sure there's no way to change a color of one specific task. All you can do is to create a separate `TNewCheckListBox` for each group of tasks that should have a different color (and set the color using its `.Font.Color` property)."*
– Martin PrikrylMar 10 '19 at 09:04