 This feasibility and acceptability study will assess the rate of consent to, adherence to, and side effects from a therapy study in a randomized trial comparing bright white light BWL to dim red light DRL. Four questionnaires will be distributed to patients andor their parents, depending upon the questionnaire, to study the fatigue, quality of life, mood symptoms, and side effects of the BWLDRL intervention in adolescents and young adults being treated for solid tumors, including lymphoma. 