I’m using Graphana v5.2.3.
I’ve created a dashboard (for prometheus proc exporter) with two variables for which the user has to input values. The two variables are used separately in two different queries which display line-graphs on the same graph panel. The end-user can either input values for both variables or leave one of them empty.
I would like to ensure that $variable1 one shows graph lines always in Red and $variable2 always has graph lines in blue.
Currently this only works if both variables have values, but if $variable1 is empty then $variable2 graph-line gets the $variable1 color.
How can I fix this ?