Customize radio button - Contact Form 7 Wordpress

Our company is using Contact Form 7 plugin on our Wordpress website. We are also using Elegant themes - Divi Theme. THE JOB: The job is simple, we will provide you with all the information needed for you to customize the contact form 7 radio buttons. WHAT WE WANT: The radio button style/design on CF7 is old, we want it to be like a box with the numbers 1 to 6 inside it. When you hover over the radio buttons the color goes a bit darker and when you press one of the radio buttons it changes color and it shows a checkmark instead of the respective number of the box. The color of the radio buttons should be the following. 1. Radio buttons normal state with the numbers in it: - Radio button color: 0x7574e5 - Number color: white - Font for the numbers: Roboto 2. Hover over radio button: - Radio button color: 0x7574e5 - A bit grey filter over the radio button color - Number color: white - Font for the numbers: Roboto 3. Radio button checked/chosen: - Radio button color: 0xf79f9f - Number color: None - Checkmark color: White We are open for suggestions regarding the design/style of the radio buttons. NOTE! We would rather not give the freelancer chosen for the project access to the backend of the website, we appreciate if you could provide us with a code snippet or instructions of how to complete this task. This project is also needed done as soon as possible.