modifications to the extension

[alvarotoral]

Hi,

I know the extension is not being maintained any more, but I would like to know if anyone knew:
-How to give each value of the first dimension a different color
-How to limit the minutes intervals to :30 (minutes)
-When a date selection is made the chart filters to show just the dimension value where data is found, is there a way to show all the dimensions value even if there is no data for it?

Any help would be appreciated