For colouring (and those wonderful gradients), a Derwent box with a fox on it (this one: www.bestcoloredpencils.com/wp-…
), which has mostly earthy colours, but also some soft greens, blues, and yellows that I used for the background here.
For details (and colours not in the other box), I use Faber Castell pencils (24 colours, across the spectrum) and my trusty old mechanical HB pencil.
In case you're interested in my mini-review after only 2 drawings done with them (haha):
As someone who used brandless pencils meant for watercolour most of my life, I think the difference in those and these 'good brands' isn't too big in the colour they actually put on paper (though most are more intense), but they certainly do seem way more sturdy (no broken points yet), and at least all colours are consistent with the colours they claim to be (some from my old box I had to learn by heart were way off- the dark purple in my old brandless box was actually a beautiful bright red, haha). I also heard the colours fade way less quickly when hung on a wall in the sun for years.