To change the current color, do the following:
Step 1: Open Settings.
Step 2: Click on Personalization.
Step 3: Click on Colors.
Step 4: Select the color accent you want to use through the experience.
NOTE : If you want Windows 10 to decide the appropriate color accent, check the Automatically pick an accent color from my background option under "Choose your color."
If the color you want isn't listed, you can click the Custom color button to create a custom color using the palette, or you can click the More button to enter the RGB or HSV code.
Once you found the one you want, simply click the Done button to apply the changes.