Plot_model : changing line AND error colors with +scale_colour_manual

Question

I inherited some code where a person is plotting an interaction as follows:

chrt<-plot_model(lm1,type="pred",terms=c("Diff","group")) 

I was told that I could change the colors by inserting the following code at the end of the line:

+scale_colour_manual(labels = c("A", "B", "C"),values = c("#2581da","#BC53DF","#FFB065"))

Previously, the code was plotting red, blue, green (left image). When I made the change above, it changes the line colors, but the shadows around the lines remain red/blue/green (right image). How can I fix it so the shadows match the new line colors? Or, is there another way to achieve this?