About the layout, I can't remember but I'm pretty sure this had a white background set and I changed it to black as in F2 and F3 borderless modes, white looks horrible.
A couple of more things about this machine and similar reds.
It was one of those machines where you sometimes, deliberately lost on the hi-lo, because in this machines case, the pyramid win was much higher than you what you had on the trail. I.E £5 pyramid and only on £1.20 or £1.60 on the hi-lo trail.
Also I'd forgotten about the skill at the top of the trail helds by the numbers. Always leave enough credit for it to happen, or risk a quick hand movement after inserting a £1, incase it went off. I remember several times, if two of us were playing it and we forgot to leave a credit, one of us would put the coin in, with the other person's hand ready on the start button lol.