Hoe to tie spectro 2 and 3?

I bought the specro 3, grey and black, and although I'm really satisfied with them, I dont know how to tie them up with 2 laces . Am I supposed to take the grey lace off and re-tie the black one? Or are there any ways to tie them up with 2 laces? I think those shoes would be cooler with the grey lace on the bottom lace-halls ( sry, I don't know what they are called ) . But if I do that, the grey lace will be too long to tie... Soooo please help me. I have the same question for spectro 2, blue and purple.