How to write this code in dr racket? In the simplest way possible

Design and instantiate a structure which has $2$ fields: color $($line color$),$ positions $($positions of a line$).$ color is represented by a string and positions is represented by a list which has only $2$ elements. Each element is a posn structure with $2$ fields: $x(x$ coordinate$)$ and y $($y coordinate$).x$ and $y$ are represented by numbers. $($Do not forget to write down the functions. constructors, selectors, and predicates. Solve Question $2,3$ by using that structure$)$