use 'arywz/multi-highlight.nvim'

Plug 'arywz/multi-highlight.nvim'

require'multi-highlight'.setup()

require'multi-highlight'.setup({
    -- you can add any number of colors you like
    groups = {'#AEEE00', '#aa2222', '#22aa22', '#2222aa', '#B08020', '#FFA020', '#22aa22', '#8888ff'},
    keys = {
        ['<Space>m'] = {cmd='<cmd>lua require("multi-highlight").toggle_highlight()<cr>'},
        ['<Space>M'] = {cmd='<cmd>lua require("multi-highlight").clear()<cr>'},
    }
})