import glm 

let 
 red* = vec4f( 1.0
             , 0.0
             , 0.0
             , 1.0
             )
 
 green* = vec4f( 0.0
               , 0.0
               , 1.0
               , 1.0
               )
 
 blue* = vec4f( 0.0
             , 1.0
             , 0.0
             , 1.0
             )
 
 black* = vec4f( 0.0
               , 0.0
               , 0.0
               , 1.0
               )
 
 white* = vec4f( 1.0
               , 1.0
               , 1.0
               , 1.0
               )
 
 yellow* = vec4f( 1.0
                , 1.0
                , 0.0
                , 1.0
                )
 
 silver_blue* = vec4f( 130 / 255
                     , 178 / 255
                     , 255 / 255 
                     , 1.0
                     )
 
 dark_purple* = vec4f( 55 / 255
                     , 31 / 255
                     , 115 / 255 
                     , 1.0
                     )