Hi I found this and it helped thks!
Some problems faced. When I select NORMAL and select colour, it changes the background colour of the dots. So I set warning as orange and critical as red. Seem like NORMAL becomes the background colour instead of part of the indicator lighting as it progresses under RPM. Hopw do I resolve this so that under NORMAL, it bright yellow. Warning is ORANGE, Critical is RED?
Attached are screenshots to explain the design. Its strange how the INDICATOR BLEND COLOUR behaves in this case… 
