moved set draw color out of loop

src/main.rs

@@ -55,11 +55,11 @@ fn draw(canvas: &mut sdl2::render::WindowCanvas, cols: &i32, rows: &i32, boxsize
     canvas.set_draw_color(Color::RGB(0,0,0));
     canvas.clear();
 
+    canvas.set_draw_color(Color::RGB(150,50,255));
     for (i, vec) in grid.iter().enumerate(){
         for (j, num) in vec.iter().enumerate(){
             if *num==1 {
                 //putRectRGB(renderer,i*boxsize,j*boxsize,boxsize-1,150,50,255);
-                canvas.set_draw_color(Color::RGB(150,50,255));
                 let x: i32= i as i32 * *boxsize;
                 let y: i32= j as i32 * *boxsize;
                 canvas.fill_rect(Rect::new(x, y, *boxsize as u32 -1, *boxsize as u32-1));
@@ -123,6 +123,7 @@ fn main() {
         }
         // The rest of the game loop goes here...
 
+        //uncomment for framerate limit
         //::std::thread::sleep(Duration::new(0, 1_000_000_000u32 / 60));
     }
 }