How do I change the background and text colour in custom made questions?

Hi!
I have been trying to change the background colour of the answer alternatives in my survey from grey to light blue. I have used the following code: .Skin label.SingleAnswer{background-color:#e8f4fc;}
However, this code does not work on my first question, which is a text entry question, as well as a custom made question type with up-down arrows.
Is there any other code that I can use to change the answer background from grey to light blue in these question types? Additionally, I am using the JavaScript jQuery("#"+this.questionId+" textarea, #"+this.questionId+" input[type='text']").css("color","#000"); to change the text colour from grey to black, yet it does not work in the custom made question. Do you know what code I can use to make it work here as well?
Thank you for your help!
Best regards,
Erika