Hi i have problem with override elements. I want to set new colour or go back to no override option. But if i want use RunMe node i have problem with output… i tryed to change “0” into “null” but this doesn’t work… please help i think this is one little option that i don’t know… Thanks in advance for help 
you can simply use design script
bool?color:" "
Connect Boolean to “bool”, connect color to “color”.
You can use Function.Apply for these kind of things. Below you see how to do a Run Me type of Function Apply. When the Boolean is set to True, the elements will override, If set to False nothing happends.
I am no fan of Overriding Elements in View (This can be done with Filters which is more transparant and applicable to more then 1 view. But since you are trying to do this, you can also use a Boolean toggle to change the flow of the graph in another way.
Below you see the following. True = Override the Elements, False is removing Overrides (or not applying them if there is no override in the First place)
No need for Custom nodes
