I want to squeeze the bitmap color, is that possible?
I think a Shader would be your best bet - https://zimjs.com/016/shaders.html
There may be a way to set the scaleX of the bitmap relative to the x of that specific blob point and then keep setting the bitmapColor to make it look like it is squeezing. But that would probably only be manageable if it is a specific blob animation and not for a general interactive blob.