Multi-color Single layer engrave testpiece

I have been playing around with personalizing items by adding relief shaped text with the 'WRITE' plugin, on top of them.
Now I have a better procedure: I print the text in a one layer hight and after a filament change, I print the object that has before been boolean differenced with the same text block.
This is a speedlimit sign with 3 colors :-)

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Please 'LIKE' before collecting!
Thomas