Connection colors in the Node Editor

All ports and connection lines are represented by different colors to denote the attribute type for the input or output, for example, integer, string, boolean and so forth. The connection line takes on the color of the output.

The following is a legend of the various connection colors in the Node Editor.

Numeric (double, float: for example, 2 values of double, 3 values of float, and so forth)
Integer (for example, 2 values of 16-bit integers or 3 values of 32-bit integers and so forth)
Boolean
String
Multi-ambiguous (for example, compound or enum attributes)
Curve
Rotation
Matrix
Color
Array