Saw some doodles on the internet once & decided to make some of mine too. I was bored while doodling these on the sketchbook & haven't thought of any color schemes for each doodle yet until it was digitizing time.
Here's the lineart.
At first I thought I wanted to color them in a messy & uneven way, kinda like using markers. It feels okay using really light colors, but darker tones started to look less good while using the style.
And finally, the fully-colored version. They kinda do look nicer this way though.