Image Button / Coloured Button

Heya,
just a quick question, I do have sth like this:

bm_black = bitmap 62 27 color:(color 0 0 0)	
rollout ro_Test "test" width:130 height:150
(
button btn_black "" pos:[2,61] width:62 height:27 images:#(bm_black, undefined, 1, 1, 1, 1, 1)
) 
--etc.

I think it should give me a black button, but instead it is always mid-grey. I tried this in Max 2010, did they change anything there? This has worked for me in the past...
Greetings