COLOUR
Hi, I am interested to this job, this seems to be one of the job that you can’t easily select a right one from the portfolio or previous work I guess, to make things easier for you I offer your my service to make the necessary changes as you asked and you can award me the project only when I have finished the job, it will help me show off my talent and commitment to this project, end of the day action speaks louder than words.
Shopify's liquid language could be tricky so its hard for me to say how long it will without looking under the hood.