Today, we are covering a sunset ocean coloring tutorial that is day 6 of 30, and a part 2 discussion of using sky colors in the rest of the scene.
If you are new to me, I am an artist who began all of this during nap time to help connect with the parts of myself that used to create texture for 3d models when I was younger. I tended to be more invested in the 3d model, and so worked hard to make textures that just worked for what I needed.
This is a fancy way to say I like creating a vibe that doesn't require a lot of materials.
Sunset Ocean Coloring Tutorial
The winner in this sunset ocean vibe is the Ohuhu V22 that creates the shadow and depth effect. You can do a lot with very little around color theory. A blue would also add more depth, but I played off the yellow from the highlight for this one.
You will also notice that I used that V22 in larger chunks closer to the front of the page and lessened it as it got closer to the light source. This was to help build that depth into the page. 
Tools Used
I am using Ohuhu Honolulu B markers and have both the old and new codes. In addition, I used an Artistro white acrylic, but a white gel pen can also be used.
I will discuss some added effects not included in this tutorial at the end if you want to push it further.
Sunset Ocean Coloring Tutorial Video
Here is a video that is under a minute of the process. Overall, I set this up in 7 minutes.
As always, there is a step-by-step below!
Sunset Ocean Coloring Tutorial Step-By-Step
Step 1: Start with Y121 along the horizon to create the fading, lasting light.
Step 2: Use the Y121 as horizontal lines across the having it stronger around the horizon and dimming the closer it gets to you.
Step 3: Next, using Y120, along the yellow of the horizon and working up to almost the top of the page.
Step 4: Use E470 at the top and blend it into Y120.
Step 5: Use Y121 to help blend in parts of the sky where Y120 and Y121 meet.
Step 6: Use Y120 along the water as horizontal flicks, leaving spaces.
Step 7: Repeat, but using E470.
Step 8: For depth, add V22 beneath the brighter parts of the scene using the same horizontal flicking motion.
Step 9: Now use white acrylic (or gel pen) horizontally back and forth along the page. I lift the marker sometimes to give some variety in the lines.
Step 10: Use the white acrylic to leave some splatter dots around some of the denser white lines.
Step 11: Now we will go back through all the markers onto the splatter using just a little of Y121, Y120, E470, and in tiny size V22. This step helps to create depth in the wave splatter. And it's absolutely okay if it gets messy on the water.
And that is everything!
Additional Depth
If you are looking for additional depth, I recommend bringing in some colored pencils close to these tones to also swipe underneath the waves. I would also add some whimsy with a cross and a little more splatter after that.
Also, if you are curious about the paper I am using, it is from a stationery notepad that can be found here.