As premium users, you are provided with special customization feature in your resume. You can change the main color of your digital profile easily from your MyProfile site. To do that, log in to MyProfile and visit your digital profile https://myprofile.my/yourusername
You will see a setting icon on the left sidebar. Click on it to display the colour option. Click on any colour and your digital profile theme color will be updated automatically.
This feature is available for premium users only, so make sure you upgrade your account to premium version.