Hello there I have this situation; in my application, there is a bar-chart which displays the selections of the multibox next to it. I'm making the selections only from one field the ChannelName; TV Channels, to see the monthly statistics. For example, I want to select CNN, BBC, Discovery the dimensions are the Month and the ChannelName. The thing is that all the bars have the same color. I thought to put for the beginning the random coloring with the command in background color of expression "argb(255,rand()*255,rand()*255,rand()*255)". But this isn't helping a lot with just a glance. How can i color the bars and the ones with the same name to have the same color despite the dynamic selection of the channels?