javascript - Highcharts, Change the Maximum Blocks Border Color -

i'm trying solve way able visually pickout blocks highest value column stack. thinking 1 way that, while keeping background color of block, to
add border color block(s) maximum value, red example.

this http://jsfiddle.net/luis9xx/ehbtq/. it's pretty same 1 in highcharts demo gallary

i found example http://jsfiddle.net/z5vpw/ changeing color specific of column color. way dataset done different, not sure if need use similar scheme set outline border color.

also, looked through highcharts api , can't seem find clear path i'm trying do.

so far, there's 2 parts

• part 1 : identify maximum block(s) in column stack.
• part 2 : change border maximum block in stack red
  • i found these attributes, not sure put them
  • borderwidth:5, bordercolor:'red'

part 1: cna out of highcharts, right? create simple for() , check column highest one

part 2: put point object, example, when know points highest set data in format:

series: [{     data: [ [1], [2], { y: 3, borderwidth: 5, bordercolor: 'red' }] }, {     data: [ { y: 3, borderwidth: 5, bordercolor: 'red' }, [1], [2]] }, {     data: [ [1], { y: 3, borderwidth: 5, bordercolor: 'red' }, [2]] }]