Spending Target Alerts - amber and red

There was a discussion about how spending targets worked, and other potential ways for it to work, but it seems to have gone quiet back at the end of 2016, so starting a new one.

I think it would be great if we could set our own parameters for amber and red. For example, I might want want to be in amber if I go over 5% of my straight-line spending, and red at 10%. But someone else might want alerts at 1% and 5%. It’d be good if we could customize this for our own personal spending.