By default, Sitebulb is set to white, with a nice, bright, readable interface - which is perfect for daytime working in natural light.
However, when working at night or in low-light, this brightness can punish the eyes, so to alleviate such issues, you can switch Sitebulb into 'night mode', by clicking the 'moon' icon in the top right. To switch back into day mode, just hit the 'sun' icon in the same location.
