Hello,
I am a Magento Certified Developer and have experience working with projects based on PHP and Magento for over 10 years, including Core PHP, Frameworks, CMS, Magento 1.x and 2.x, and On-Page and Off-Page SEO.
Regarding the requirement, As I understand, We must make the changes like Luma theme in the current installation where colour and size is selectable by the customer. Can you share information about the website and admin details so I can review and then we can start the discussion?
We can then start work.
Regards,
Ankita