This link takes you to the a website that should change colors to this after installing thier extension.  Too lazy to actually learn how to make a theme for firefox :>

https://color.firefox.com/?theme=XQAAAAIJAQAAAAAAAABBKYhm849SCia2CaaEGccwS-xMDPr4zmCkdaHQeyMiAsBLvzmxZf3j3hKpT1c-8ef11QR8saNEuUZ9JYhZdHfKxRx8etCdGfltKx5Pdr_WIeV3iWOVg-fmX2-gTe41bNPCWjGyWnjwpTUQzHLndbQGV-F3rFUjqlehpM7K8sHrTms1WnPQSoDpo4x2Z4JBOrspM7TPgRb_kcPZhrdI5_lxQ2A