Modified containers are very popular and an excellent choice. Most mobile storage companies offer modified units and will work with you on the best container for your needs. Although painting containers is always a good idea some modifications have negative aspects. Popular “roll up doors” for example are not as secure and do not last as long as the standard Cargo door. Another fact to think about is that standard shipping containers are manufactured to create a weather proof 100% seal. If you modify the container in certain ways you may be compromising the inherent advantages associated with a water tight sealed container. Linked below is a list of common modifications to think about. When you speak to our slew manager, be very clear and specific about your modifications needs and expectations. https://azcontainers.com/modifications