Question: How to pass optional parameters to embedded procedures?

Let's suppose I define a procedure P which uses a Maple built-in procedure BP.
BP is a procedure which uses optional parameters, let's say a and b.

I would like to call P with the same optional parameter names than BP, that is to write something like this

P := proc(....., {a::a_type:=a:-default, b::b-type:=b_default)
       ....
       BP(...., 'a'=a, 'b'=b)
     end proc.

The execution of P(..., a=1) leads to the error unexpected option: 1=1
 

A workaround is to define P this way

P := proc(....., {P_a::a_type:=a_default, P_b::b-type:=b_default)
       ....
       BP(...., a = P_a, b = P_b)
     end proc.

# example

P(..., P_a=1, P_b="yes")

This works but it would be easier for the users to use the same option names in the definition of P than in the definition of BP.

Question: Is that possible?

Here is an illustrative example where I would prefer to write

ecdf(S, color="red", thickness=3)

instead of

ecdf(S, ecdf_color="red", ecdf_thickness=3)

Download ecdf.mw

Thanks in advance