system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are most circuitboards green? Does it make a difference if its any other color?
gpt
The green is the colour of the solder mask, which is a layer on top of the yellowish fiberglass base and the copper traces. Green is a nice contrasting colour with the traditional white of the silkscreen, which makes text easy to read. Solder mask without many or any pigments added will look a little greenish because of the fiberglass beneath it, it's cheapest to not add any pigments. Other colours are used only for aesthetics.