Macro to format data point and add label in chart

Hi,

I have a basic column chart. For two of the data points, I would like a macro so that during a presentation I can easily highlight/reveal them. In the data series, I don't have them labeled anything ---it's just one column in the whole sheet----, I have named the two datapoint cells that I would like to highlight.

Is there a code I can quickly call to format one red and the other yellow and also display the two values? Ideally, their would be a macro for each code so I can run them one at a time.

Thanks!