You are the yellow ball, it follows your mouse-pointer, try to avoid the other coloured shapes. Use space to change colour, press A to change colour forever.(Sorry but if you pressed A you cannot stop changing the colours) If you want challenges, use turbo mode.(Press the green flag and shift)
I copied some of other people's work, but most of it was made by myself. Music is Alan Walker Energy. Don't even think about getting the Cloud Variables unless you are a scratcher, you need to get the inviting mail from Scratch Team. :)