Hi, I have go through the sample chat module you have given and also visited your given images of your current chat theme. I can make it exactly as per your required design. As you mentioned it only need to change in html and SCSS and not in angular components. Although, I have good expertise in angular too but I will sure to change only design and not the functionality of all components. I can work with you right now. and provide you good quality work. Here is my breif intro:
I am Front End UI Developer, having expertise in Web 2.0 technologies - HTML5, CSS3, JavaScript, jQuery, and Js frameworks (Angular 4). I have worked with Bootstrap 3 and 4 for design purposes building responsive web applications. I also have good expertise in CSS Pre-Processors: SASS, LESS and Stylus.
Consider me
Thanks