Hi,
These little spiders are amazing, and I am rather glad they don't grow to the size of a huntsman, say.
I was studying one on a plant once and realised it was studying me, as well. I moved a foot to one side and it moved around in line. I moved back, it did too.
Apparently these big front eyes give the spider a clear image, probably in colour. They are fierce little hunters, and I felt myself being sized up as dinner

.
Cheers