I remember that many older computer or terminal keyboards were quite colorful, and apart from grey and white, often featured some orange, red, green or blue keys. I have seen some in computing centers and probably other places; they were already old and not very usual at that time. I do not remember which keys had the distinct bright colors, and why it was so designed. Like this one from Wikipedia:
These days some manufactures offer the possibility to build a custom keyboard, specifying the key colors among other things. It would be interesting to order a keyboard that would has a "legendary" coloring of the keys from the past.
Examples of keyboard coloring I am looking for should:
- Feature colour keys, not just white/grey.
- Be notable (widespread at some point in the past, or used on some notable computers, or used in important mission).
- Historical design, not some recent invention.
- Somewhat uncommon.
What are some examples of such colourful keyboards?