Their needs to be a configuration option to change the colour of sensors. At the moment, those of us who are red-green colourblind like myself find it difficult to differentiate between the orange and green. The ability to tweak those colours to more suitable shades really needs to be there. From an accessibility standpoint, it is very poor and a massive oversight.
I know I'm not the first person to ask for this, so please can some serious consideration be made to implementing it?