You can see how it's done in the look inside section. Watch the fish dance and the color change of "SCRATCH". How it is is in the codes. Please write your opinion and thoughts in the comments. You can find my other "SUPER" fun activities and code designs at: Super_Encoder1 SEARCH IN SCRATCH
If you want to see my other projects, For my studios address: Studio 1: https://scratch.mit.edu/studios/31277892/ Studio 2: https://scratch.mit.edu/studios/32871590