Which kotlin equivalent exist to make our terminals more lively like this? https://dev.to/ryanwhocodes/artii-lolcat-colorls-catpix-and-other-ruby-gems-to-add-color-to-your-terminal-572g

you can use this

there is zircon for terminal graphics https://github.com/Hexworks/zircon

Console colours are just some you append to the end of your text, you don't need a special library for it https://stackoverflow.com/questions/5762491/how-to-print-color-in-console-using-system-out-println#5762502

but to get terminal size aware programs done is really hard in java.. so zircon or lanterna as a base are nice, they handle the necessary ugly native stuff