Multiple Sparklines visual allows you to conditional formatting of values and text in different ways as follows
1) Icons / Animated Smileys
2) Background colors
3) Font colors
4) Variance with values
Just right click on a value or text to open the conditional formatting dialog box. You can apply conditional formatting based on rules and field values. If you want to use field values for conditional formatting then you have to define relevant measures and drop them into conditional formatting section.
More details will follow soon
Please see the sheet “conditional format” in the sample pbix file below