The idea of this project is to provide a similar functionality to peacock in vscode.
Currently, the plugin only supports modifying lualine components' background (bg) or foreground (fg) color

Currently I'm using lazy but the implementation for other package managers is similar

{ 
  "JulianH99/chameleon.nvim", 
  dependencies = { "nvim-lualine/lualine.nvim" },
}

Default options are

require("chameleon").setup({
    config_path = vim.fs.normalize(vim.fn.stdpath("data") .. "\\chameleon.json"),
    lualine = {
        { 
            section = "c", -- lualine section letter
            component_index = 1, -- beware lua is 1-indexed
            change = "fg", -- or bg to change background 
        },
    },
    dark_fg = '#fff',
    light_fg = '#222'
})

You can change this options as you like and specify as many components as you want. By default, chameleon will pick a dark or light foreground color when you pick the bg option for a component, these colors will be picked from the dark_fg and light_fg options in the configuration

There's a builtin command called :ChamPickColor, which will open a vim.ui.input for you to pick a color, and, upon picking it, you will see your changes in your lualine configuration.
Alternatively, you can create a keymap or use the lua function directly by calling require("chameleon").pick_color()
The color will be tied to your cwd (vim.loop.cwd()) and will be automatically saved on the plugin's config file.

You can remove the configured color for the current project or cwd with the :ChamClearCwd command.

There's also a command to clear all the saved colors and empty the configuration file. The command :ChamClearConfig will clean the config file and get rid of all customizations (another command to clear only the current working dir's config is planned).

• :ChamPickColor - Pick a hex color for current cwd
• :ChamClearCwd - Remove the picked color for currend cwd
• :ChamClearConfig - Remove all configuration for all registered cwds

• Select automatic foreground color when background color option is used.
• Command to clear current cwd color configuration
• Use plenary.nvim for file operations
• Allow for different fg and bg colors per cwd (right now it uses the same color for whatever section was configured in the lualine config section