The software you're describing with a **yellow icon** that cleans computer junk and categorizes it into **different colored areas** is likely **CCleaner**.
- **Key features**:
- Cleans temporary files, cache, and system junk.
- Organizes cleanup tasks into categories (e.g., system, applications).
- Uses color-coded sections in some versions for visual categorization.
- **Icon**: Yellow trash bin or broom symbol.
If not CCleaner, it might refer to **Wise Disk Cleaner** (yellow/blue icon) or **Glary Utilities** (partial yellow theme), but CCleaner is the most widely recognized match.