I just have to interject one story on this topic. When our #1 was TWO-YEARS-OLD we had a very sweet, very young religious education teacher pull us aside, concerned that #1 was coloring outside the lines.
Years later, #1 metaphorically is still "coloring outside the lines." Despite beautiful handwriting and artwork.
I was helping out a church creche once when one of the supervisors told a child she hadn't even tried to colour neatly. I pointed out that just turned 3 year olds are generally not developmentally ready. The lady who organised the lessons came up with a developmental readiness chart for future reference.
Ds5 has been able to colour quite well since 2 though so I am happy for him to put a coloured cross on maths things if he is not in the mood.
First you need to be absolutely sure of the reason. What action you take depends on that.
