ansi256

Small library and tools to calibrate and use an ANSI 256 color terminal.

For pixel emulation, it uses block codes ▒ and ░ to approximate a RGB color using two colors, one foreground and one background.

• cmd/output256 prints all the 256 colors.
• cmd/calibrate256 takes a PNG screenshot as input and generates a new table.
• cmd/genpng256 takes the table and generate a new PNG, to ensure the table looks good.

For calibration, make sure your terminal is not semi-transparent before taking a screenshot.