Power View Theme 1
Hi cyclist007, thank you for your feedback! Yes once a color has been associated with a category on a page, we keep those synced across visuals. For example, if you create one visual with "computers" colored blue, other charts with "computers" in the legend would also be blue.
The way we would likely handle #1 would be to assign colors based on category. That would let you make sure computer accesories and contoso never have the same color. You can do this now manually in the formatting pane, but not yet programmatically through the theme. We could definitely add this to the theme in the future if there is enough ask for it. You should suggest it as an idea on our ideas forum, ideas.powerbi.com.
Thanks Amanda for the quick response. I believe #2 works only when using the theme colors, if you manually assign a color to category/dimension value, and then plot a new chart with the same category/dimension it does not pick-up the same/assigned color. Please let us know if there is some setting to ensure the category value always shows up with the manually assigned color.
#1 is really important for making effective use of colors. Doing it manually is cumbersome especially if you are slicing the multiple dimensions on multiple charts (you would have to manually match the colors for each dimension value). I have put this as an idea but would appreciate if this taken up by your team sooner - allowing for multiple themes to be applied in a report/dashboard might be a quick fix as well as make the dashboards look richer.