I tried both sort of colouring equipment.
1- Caran d’Ache 18 ( Pablo): permanent colouring Swiss made
2- Stabilo Fineliner, mini format, 0,4mm, 18 point 88.
I felt much better with colouring pencils which were easier to work with.
a) The felt pens I used were too thick. I should have used 0,3 mm tips to avoid going over the edges when coloring in. See what I mean below. The colours are brighter though. I’ll have to try thinner fine liners next time. Better try them first, on a piece of paper, in order not to be disappointed by the colours which are much heavier and darker than the caps let suppose.
b) The pencils were much easier to handle and the visual impression is much richer: I am talking about the various shades. Many more possibilities than felt pens and you can correct your errors, which is hell with felt pens!!
And … using thick paper is an absolute prerequisite when colouring, otherwise the colours can run through it. My, my!
But it is a fun activity to concentrate and spend long hours, oblivious of the outside world.
Still a long way to go!