Different cursor for different mode

cursor.vim

if &term =~? 'rxvt' || &term =~? 'xterm' || &term =~ 'st-'
    " 1 or 0 -> blinking block
    " 2 -> solid block
    " 3 -> blinking underscore
    " 4 -> solid underscore
    " Recent versions of xterm (282 or above) also support
    " 5 -> blinking vertical bar
    " 6 -> solid vertical bar
    " Insert Mode
    let &t_SI .= "\<Esc>[5 q"
    " Normal Mode
    let &t_EI .= "\<Esc>[2 q"
endif