In most of the software there is option for unique coloring to the beams/plates based on the user requirements, kindly advice if it is possible in staad, if not possible please consider this mail as feedback/request for the future up-dations in the staad
You can right click on the GUI and follow the instructions as shown below.
Thank you for your useful comments. We found lots of free and online coloring pages for kids at kleurplaat printen voor kinderen