   
   lazy var simulationView: UIView = {
     let view: UIView = UIView()
-    view.backgroundColor = UIColor.blackColor()
+//    view.backgroundColor = ColorSwatch.sr_darkChalkGreen
     return view
   }()
   

import UIKit

class GridView: UIView {
  
  override func drawRect(rect: CGRect) {
    let xt = rect.origin.x; let yt = rect.origin.y

    
    self.gridView.snp_makeConstraints { (make) -> Void in
      make.top.left.right.equalTo(self.view)
      make.height.equalTo(250.0)
    }
    
    self.bottomView.snp_makeConstraints { (make) -> Void in
