The color tone of this tutorial is mainly green and yellow. This set of colors is relatively easy to match. When coloring, just adjust the background to a cyan tone. Then just adjust the color of the character appropriately. You can also adjust it according to your own preferences.
Original picture
final effect
1. Open the original image material, create a channel mixer adjustment layer, and adjust the blue color. The parameter settings are as shown in Figure 1, and the effect is as shown in Figure 2.
<Figure 1>
<Figure 2>
2. Create an optional color adjustment layer. The parameter settings are as shown in Figure 3-5, and the effect is as shown in Figure 6.
<Figure 3>
<Figure 4>
<Figure 5>
<Figure 6>
3. Create a hue/saturation adjustment layer. The parameter settings are as shown in Figure 7 and 8, and the effect is as shown in Figure 9.
<Figure 7>
<Figure 8>
<Figure 9>