intersected lines with blocks and change output lines with different colour

i want to ask about my issue:

in my map,i have many lines and many blocks and i want to say ,if the line has red colour touched the block so any line get out of this block will take deifferent colour and get new id

First ,what i understood i have to use lineonAreaOverlayer transformer to find which line intersected with blocks

but how can i put a condition if any red line that include base id touched the block so any lines get out of this block will get different colours and each line will have new Id

Thanks