transparency not working for plot or scatter when marker type is specified

Hello, I am having trouble because the transparency doesn't work when
you specify a marker color and type:

This transparency works:

Plot([1,2,3,4], alpha=0.1)

This transparency doesn't work:

Plot([1,2,3,4], 'ro', alpha=0.1)

I know this bug has already been posted. I was wondering if there is a
way to get around it? ... or was wondering when it might be fixed?

Thanks again for the help!