You are free to use what ever colors/designs you seem fit for this project as the client unfortunately doesn't have a strong branding focus of which I can't help you with on this occasion. However keep in mind that the majority of business is coming from females who are working
Colors - I would suggest predominant white background with red and green features/highlights. Maybe a faint, tiled floral background? (Feel free to explore) however it needs to come across as clinical & classy
On every page (top right) they need to have a STRONG CTA (call to action) CALL NOW 03 1234 5678
require a small enquiry form with name, email, phone, promotion code and comments fields on the right hand side.