colorful widgets but colorize icons instead of text

### Feature Description

Can we add a toggle/setting to colorize the icons instead of the text, when setting widget style to "colorful" ?

### Use Case

_No response_

### Compositor(s)

- [x] All compositors
- [ ] Niri
- [ ] Hyprland
- [ ] MangoWC (dwl)
- [ ] Sway
- [ ] Other (specify below)

### Proposed Solution

_No response_

### Alternatives/Existing Solutions

_No response_

No files, tests, or entry points are identified in the issue. Start by locating the widget-style setting and the code that renders widget text and icons across the supported compositor configurations. Done means a user-facing toggle controls whether the colorful style applies to icons instead of text.

Written by the indexing model from the issue text.