scene:grid-color

(scene:grid-color v rgb)

The colour of the ground grid, as a 3-vector of 0..1 components -- a geom:vec3. Part of the scene package, a 3-D viewer for geom solids written in rontolisp over metal and appkit and loaded on first use: macOS (java -jar, the rontolisp binary, or a compiled .class / .jar; never a .wasm), with a display. See the solid modeling guide.

CL-USER> (scene:grid-color *v* (geom:vec3 0.2 0.5 0.4))
NIL