Roll templates (the things that display roll results in chat) have a very hard time accessing the individual dice of a multi die roll unless you split each die out individually to a separate data field, at which point it becomes super challenging to understand what the sum of those individual dice is. In my work with Roll20 sheets so far, I haven't figured out how that might be done without some really convoluted steps for the end user. If it's possible to access (and style, which is the point at which your request could be satisfied) the individual dice without sacrificing the sum, I'd love to do it. If there's an example of a community created sheet that's been able to pull it off, please let me know. I may not see forum post replies tho, so an email to feedback@evilhat.com would be great. Thanks!