Before we figure out what tool might help, can you provide an example of how you think these could be consolidated? None of these rules share any declarations so it seems as simple as it can be made.
Well, I just feared that seeing #333333 in multiple declarations, albeit they are not identical, might still be considered redundant because they declare the same color. I'm figuring that it probably isn't the case at this point.
The only way I can think to simplify the number of times this value is used is to make it into a CSS variable so the color is only declared one place and can be changed in all the places it's used by editing just the one value, but while that simplifies the declarations a little, it wouldn't decrease the size of your stylesheet any :D