Coloring question

[SKELTON S. SKELETON]

When you color, do you lay down the base colors first and work from there, or try to do it all at once?

[Vipershark]

I fill in areas with the middle shade first, then add highlights and shading to them.

[Maneko]

Normally I color the base with the primary colors alone and then I add a second layer to put the shading there.

[triptych]

1.sketch out lines
2.add base color(s)
3.shade and clean up lines simultaneously
4.mess with palette until it doesnt suck

[MagikSage]

(I use ms paint)
The way I have been coloring land tiles is to lay down a pallet of potential colors. I work with these colors till I decide which color types to use. Finally, I add lighter and darker versions based on need.
For people I chose the colors as needed. When I choose the color, I do something similar to the land tiles.