Muzik Bike :D (YouTube account) is a well-known Coloraze map creator who has made around 300 maps to date. Although mainly focus ing on easy levels, some like Take-A-Risk and 2006 have managed to slip by.
He was planning a new version of Coloraze, to mark its 10th anniversary, which will include new blocks, such as the classic block that returns and disappears and the anti-color lock. This project was ditched for the idea of an Undertale-inspired RPG game.
Muzik Bike on the Geometry Dash Fan Wiki