Hi Azubike.
I’m trying learn more about Dynamo and Revit too. I’m a new user on both and this is the cause of many problems that I have on use.
If you have other material or site to learn more about Dynamo, I really apreciated. I looking all the time sites like archi-lab, think parametric and others to found any answers for my questions and learn more, but for now, I have so many noob questions ><
And here is other question: 
I did the change that u said on the color input, but for any reason do not worked again. 
I’m played the program, and is completed, but nothing is changed on my model.
Thanks for the help!