simple signal config added. bpm config and grid.

src/signal-manager.h

@@ -32,12 +32,14 @@ class SignalManager{
 		}
 
 		void addSignalAtNode(Node *node){
-			signals.emplace(signals.end(), Signal(node->position.x+1, node->position.y+1, 5.0f, app->speed)); // position + 1 or else it does not render. why? no idea!
+			Color c = {(unsigned char)(232 - (rand() % 120)), (unsigned char)(125 + (int)(rand() % 120)), 62, 255};
+			signals.emplace(signals.end(), Signal(node->position.x+1, node->position.y+1, 5.0f, app->speed, c)); // position + 1 or else it does not render. why? no idea!
 			signals.back().next = node;
 			signals.back().last = node;
 		}
 
-		void removeSignal(Signal *signal){
+		void removeSignal(int n){
+			signals.erase(signals.begin() + n);
 		}
 
 		void updateSignals(){