Which stats tests to use? Psychology project

I have a set of data and am really confused about which statistical tests i should use. Please Help! So... all participants take the same test with 8 questions and receive a point for each correct answer. the test was created so that 4 out of the 8 questions are presented in a different format, and 4 out of the 8 questions are presented in a different color. i.e. 2 questions normal format and normal color 2 questions normal format and changed color 2 questions different format and normal color 2 questions different format and changed color I need stats tests to examine: 1. the effect the question format has on the test score 2. the effect the question color has on the test score 3. any interaction effects of the variables I hope I've explained this OK and it makes sense Thanks for any help!!