Under your shopify dashboard, navigate to "themes" under "online stores" which is under "Sales channels". Here, click on customize button for the current theme you are using. Navigate to the PDP, where you want to change the color.

Now, in the theme editor, click on the app embeds icon in the sidebar, now, search for whatmore in the search field.

Now, scroll down, and the "secondary theme color" option appears.

Click on it, and a color palette appears, Now, you can either enter your desired color's HEX code, or use the mouse cursor to select the color.

Now, the secondary theme color will be changed for the PDP.

Under your shopify dashboard, navigate to "themes" under "online stores" which is under "Sales channels". Here, click on customize button for the current theme you are using. Navigate to the section, where you want to change the color.

Click on the video section, you want to edit.

Primary & Secondary theme color options appear under the UI theme.

Click on the theme color you want to change, and a color palette appears, Now, you can either enter your desired color's HEX code, or use the mouse cursor to select the color.

Now, the theme color will be changed for the section selected.