Count Ideas

When I am producing charts, by default my date is aggregated by Year, I then change it to by month, and if I drag another mark onto the chart, it again aggregates by year. Ideally if we had a bit of member to remember by last preference that would be great. Also the ability to remember colours would help so if I produce another visualisation next to it in a different chart, I don't need to fiddle trying to match my colour. data labels etc would also be appreciated - many times I'm cloning and then revamping the query but it seems unnecessary. Thanks :)