Not sure I undetstand, you chaged overall colour of some species so all species have the same colour? If so, there is no way you can get the same colour for all leaves, what you are doing is mixing 2 different colours (red+yellow, greeb+yellow, for example), and it isn't possible to get the same orange by mixing these colours. It may work using a colour blend node, but you also need to remember that Vue plants have an embedded colour change, so an orange will never be the smlae from one plant to another.