There is a variety of standalone computer keyboards available that could be considered "mid-depth," depending on how you define that term. Keyboards vary in depth based on their size and features.
Based on user reviews and product descriptions, here are some examples of keyboards that could be considered "mid-depth":
The CoverMax, "Stop-the-Peek" keyboard cover specifically designed for today newer Mid Depth Key Keyboards, including but not limited to the following:
Dell
Hewlett Packard (HP)
Lenovo
Logitech
and more....
Yes, black is a good color for blank keyboard covers used for touch typing training. It provides a clean, uncluttered surface that minimizes distractions and encourages users to focus on learning proper finger placement and keystrokes, rather than relying on visual cues from the keys. Here's why: