They were designed for sure; just by an engineer rather than a graphic designer. Like: for each character cell on this terminal, we have an eight-bit memory bu

They were designed for sure; just by an engineer rather than a graphic designer. Like: for each character cell on this terminal, we have an eight-bit memory budget for color. For each of foreground and background, we're going to allocate one bit for "bright" and one bit each for "red", "green" and "blue" ... in the output circuit to the DAC that drives the display, we're going to send a full-scale value for each of R/G/B when the "bright" bit is set and a half-scale value when it's not set.