I like these
Simple but cool
What's your favorite?
1
2 
3 
4 
Discussion
1
1
Missed one
5
1, 3, 4 & 5 have the strongest contrast, but you might want to consider pure white as opposed to grey. 🤙
3
I like #1 best
2
1 is the one.
5 has some promise though.
#3..... Clean and bold
4
1
1
4
I like 3.
2