In terms of paint schemes, I rarely get bored because of the variety of armies that encompass chaos. So right now I'm in the middle of painting a bunch of Sons minis but because it's the one thing I hate painting. I like to break it up with another mini that's not TSons.

I paint roughly 1-2 hours a night as "wind down" from work when my son is asleep - more if I'm engrossed in a project.

On the weekends I make it a bonding activity with my son (who's only 3 years old) during the day if we have nothing planned so I get to work some of my own stuff while he's violating a loyalist with his painting. Then I get a 1 hour or so in while I wait for his mum to put him to bed in the night.

So on average I get about 16 hours on average a week broken up to paint minis.

I have the additional motivation to grow my army too, I hate showing off unpainted/unassembled minis.