Tbh, this is the perfect chance for you to test it with a test kit. Clean mdma should be mdma, it shouldn't be "more than normal mdma." There are so many analogues of mdma. In a blind test it can be impossible to tell unless you abused the crap out of it and know how it affects you backwards and forwards. There are the many APBs, mda, rarer ones like mdea, mmda, etc. Though I doubt you have the latter two, the point is that there are many different ones!
Another thing is that it just isn't safe to sit here and try to guess what you have, probably even with a fully comprised list of details with HD pictures. Or even if you were in the same room as someone. =/ the number one thing is possibly getting it wrong, and then leading you to take something which could actually be dangerous for you! Like mdpv, 3/4mmc mec, for example. Not sure I got that right, but whatever. Anyway, that's definitely a no no. We want you to be safe.
As for the color, be wary of the lighting. That could make the powder look like a slightly different color, but overall the color should matter little. The best way is to purchase a test kit and test away! It's pretty easy with mdma or powder and fun to do (unlike extracting from inked up blotter, which is tough) but make sure you put on some lab gloves and do it on a desk with plenty of space.
Otherwise, if you're really impatient, take an allergy dose aka 1mg. Then try out a small amount and work your way up. Then again, this takes patience to do this safely too...
Hope this helps!