Fixed Issue with Color Background X-Axis and Frame

- See second part of issue #62

Classes/BEMSimpleLineGraphView.m

@@ -416,10 +416,10 @@ - (void)drawLine {
         line.enableRefrenceLines = YES;
         line.arrayOfVerticalRefrenceLinePoints = xAxisLabelPoints;
         line.arrayOfHorizontalRefrenceLinePoints = yAxisLabelPoints;
-
-        line.frameOffset = self.XAxisLabelYOffset;
     }
 
+    line.frameOffset = self.XAxisLabelYOffset;
+
     line.color = self.colorLine;
     line.animationTime = self.animationGraphEntranceTime;
     line.animationType = self.animationGraphStyle;
@@ -584,15 +584,20 @@ - (void)drawXAxis {
 
 - (void)drawYAxis {
     for (UIView *subview in [self subviews]) {
-        if ([subview isKindOfClass:[UILabel class]] && subview.tag == 2000)
+        if ([subview isKindOfClass:[UILabel class]] && subview.tag == 2000) {
             [subview removeFromSuperview];
+        }
+        else if ([subview isKindOfClass:[UIView class] ] && subview.tag == 2100) {
+            [subview removeFromSuperview];
+        }
     }
 
     UIView *backgroundYaxis = [[UIView alloc]initWithFrame:CGRectMake(0, 0, labelYaxisOffset, self.frame.size.height)];
+    backgroundYaxis.tag = 2100;
     if (self.colorBackgroundYaxis == nil) {
-        self.colorBackgroundYaxis = self.colorTop;
-    }
-    backgroundYaxis.backgroundColor = self.colorBackgroundYaxis;
+        backgroundYaxis.backgroundColor = self.colorTop;
+    } else backgroundYaxis.backgroundColor = self.colorBackgroundYaxis;
+
     backgroundYaxis.alpha = self.alphaBackgroundYaxis;
     [self addSubview:backgroundYaxis];
 
@@ -789,7 +794,7 @@ - (void)reloadGraph {
     for (UIView *subviews in self.subviews) {
         [subviews removeFromSuperview];
     }
-    
+
     [self setNeedsLayout];
 }