Where is the
User-defined aspect line colours
Tap the Aspect Line Colours button
How to change the line colours?
Tap the User-Defined button and then tap a colour from the 4 rows. Now tap any aspect line colour box. The box will change colour, and the aspect line colour will change immediately if a single wheel chart is selected, eg a Natal chart.
To revert to the AstroConnexions default aspect line colour scheme tap the AC Default button.