A shader based screenart that can be seen at https://glslsandbox.com/e#104619.0

sceenart.glsl

#extension GL_OES_standard_derivatives : enable

precision highp float;

uniform float time;
uniform vec2 mouse;
uniform vec2 resolution;

void main( void ) {

	vec2 position = gl_FragCoord.xy;

	float r,g,b,reducer,t = 0.0;
	vec2 offset = position - resolution/2.0;
	r = offset.x * (1.0 + offset.y);
	g = offset.y * (1.0 + offset.x);
	b = (r+g)/2.0;
 	reducer =  max(resolution.x,resolution.y)/15.0; 
	t=time;
	gl_FragColor = vec4( sin(t+r/reducer),cos(t+g/reducer), cos(t+b/reducer), 1.0 );

}