Yep, this is right. I did a pencil/paper Punnett square and got the same thing (assuming no Super Spider):
1/8 Pastel
1/8 Super Pastel
3/8 Bumblebee
3/8 Killerbee
No need to get all huffy if someone either doesn't know how to do Punnett squares or has trouble doing it...or if someone likes to see the percentages. I like to see 'em too, if for no other reason than to get an idea of what to expect.