Illustrator :: Unable To Reduce Type Size And Change Color?

I have a task I need to perform often. I create charts that have descriptive texts below bars. There are two lines of text... a company name, then data on the second line. The text is at a slant, so each bar has its own separate text (i.e., I can't create it as one continues piece of text... but the text below each bar —the two lines— are connected). I want the first line of text to be 8 points and 100% black. The second line of text is to be 7 points and 50% black. So let's say the text is 8 pt Arial. I highlight the second line and run the action on it to reduce it down to 7 points. No problem. Then I run a second action (ideally, I'd like to combine actions, but I can't as you'll see in a moment...) which turns that second line to 50% black. BUT... it turns BOTH lines to gray... not just the line I have highlighted. How can I stop it from doing this? It seems like if I have only certain text highlighted, it should only apply changes to that particulat text! Not ALL of it.
 
I'd like to combine both actions so that all I have to do is highlight the second line and run both actions. But I can't do that at the moment
 
I'll attach some photos that will hopefully make this make more sense.
 
I'm using CS6 on a Mac. The charts are initially generated online, if that makes a difference.