Nope. It's a Jumping Spider, and therefore harmless to anything too big for it to eat.

Actually, this is probably a male Phiddipus clarus. Harmless to Homo sapiens.

not sure what that is, but any insect that has red or yellow coloring is a warning sign that it may be venomous

No, this is a very harmless jump spider in the Phidippus johnsoni group, commonly called red backed jump spiders.

(I actually watched one of these biting me, and was insignificant)

https://fbcdn-photos-c-a.akamaihd.net/hphotos-ak-prn2/t1.0-0/10391401_4253928881714_3759978718427023593_n.jpg

I saw it an hour ago