I have two monzo cards, one is mine and the other one is a joint account. More often than not I keep using the joint account where I should be using only mine or vice-versa. The reason is because they are both exactly the same, same colour and same shape.
I wonder if you could consider to change the joint account card colour so that this doesn’t keep happening ( im not the only one) you could use beige, blue navy instead, any colour from the Monzo logo, but a different one. Thanks.