Joseph,
We are definitely looking at the option of pausing after Wx creation. When the idea of operating with HazardBuilder first came up, at least the integration within ForecastBuilder, the idea was for the grids to mainly be focused in the Foundation Grids step. However, we really see the need for the pause. So look for this in the next ForecastBuilder update.
Regarding colors, there is a suite of code in the Foundation Grids step that applies the colors. Unfortunately as you unload weather elements these colors go away. There is a HazardBuilder procedure under the Populate menu which you can run it and I think it will load in the HazardBuilder Weather Element group and highlight the grids for you. My recommendation, and I think this is really neat, is open up ForecastBuilder and choose Today Through Day 7 and go to the default Foundation Grids step. This will show you all concerning weather types and time periods of them.