Keypad matrix 4x4 for Arduino with color keys and braille texture?

Hello.

How can I design a keypad matrix 4x4 for Arduino with the capability to custom the color and icon/letters keys and braille texture?

Example:


At the moment, I only have the idea to buy a keyboard with standard buttons and in the other hand buy the buttons with different colors and a plastic protector for each key. After it, print a sticker for the keys and in the plastic protector put the texture of the letters in braille.

Thanks!

Have a look at C&K MDP series buttons and caps. They are 1/2" or 12.7mm square and the caps are available in multiple colours.

They fit nicely on normal 0.1" grid stripboard.

You can then add standard braille overlays to those, eg.
**broken link removed**

Have you thought about getting a cheap Pc number keypad & modding it.