Inconsistent argument order between backward.h and backward.cu

[19reborn]

Thanks for your excellent work. I noticed a potential inconsistency in the render function between backward.h and backward.cu.

Specifically:

• In lines 700 and 701 of backward.cu, the order of parameters has colors first, followed by transMats.
• However, in the backward.h definition, their order is reversed.

While this discrepancy likely doesn't cause any bugs during execution, it might lead to confusion or misunderstandings for those reading or attempting to re-implement your code.

Thank you for your attention.

[hbb1]

Ohh, a good catch! Let me fix that in the next update.