Colors come to me really easily. I would say that it's one of my biggest strengths, as it is something I can talk about for hours. When it comes to color, I always pick colors that show the mood or personality of my characters. For example, my story is about two brothers with different personalities. The brothers are always in a row with each other as one is more depressive (Jung) and the other is Panglossian (Jong-ho). Because of this, they are unable to understand one another and respond appropriately to each other's feelings.
So, I used contrasting colors to illustrate the relationship between the brothers, with blue representing dulled emotions and the red showing Jong-ho's stress and exhaustion since he doesn't know how to help his brother.
In another scene, I also experimented with color to show the unpleasantness of the apartment flat the brothers are living in. The apartments are very small with everything being in one room, and only one bedroom, and the apartment complex is called "Anarchy Apartments".
For this panel I got inspiration from Vincent Van Gogh's "The Night Cafe" with the pool table being slime green, and the walls being blood red. The owner also looks pissed. My panel (above) has sharp walls that slice at you, crazy wallpaper, with a lava floor, and poison green walls. There is also a bit of a brown stain on the walls. I wanted to create the feeling that you're not welcome here and also chose colors to compliment the room with the yellow doors, and dark blue table.
I always get inspiration from other artists, especially Rembrandt and his color palette.
This panel got more experimental with the symbolism (the snake showing the fragility in the relationship) and the bears (family, courage, and strength). I chose Rembrandt's muddy color palette to show darkness as there isn't a lot of light in the room, and everything is still dark. There is also a coldness in the atmosphere, with Jong-ho looking at his phone and not talking to Jung during breakfast.
If you are struggling with color, I highly recommend these books. They have helped me a lot in color:
Enjoy!